% location.bib 
% A small bibliography on locational analysis.
% Author: J\"org Fliege
% Timestamp: 19/January/1998

@ARTICLE(AhMaOr:91,
         AUTHOR = {Ravindra K. Ahuja and Thomas L. Magnanti and James B. Orlin},
         TITLE = {Some {R}ecent {A}dvances in {N}etwork {F}lows},
         JOURNAL = {SIAM Review},
         YEAR = 1991,
         VOLUME = 33,
         NUMBER = 2,
         PAGES = {175--219},
         MONTH = {June},
         NOTE = {Also published as~\cite{AhMaOr:93}}
        )

@BOOK(AhMaOr:93,
      AUTHOR = {Ravindra K. Ahuja and Thomas L. Magnanti and James B. Orlin},
      TITLE = {Network Flows; Theory, Algorithms, and Applications},
      YEAR = 1993,
      PUBLISHER = {Prentice Hall},
      ADDRESS = {Englewood Cliffs, New Jersey}
     )

@ARTICLE(Albert:40,
         AUTHOR = {G.~E. Albert},
         TITLE = {A note on quasimetric spaces},
         JOURNAL = {Bulletin of the American Mathematical Society},
         YEAR = 1940,
         VOLUME = 47,
         PAGES = {479--482}
        )

@ARTICLE(Andersen:96,
         AUTHOR = {Knud D. Andersen},
         TITLE = {An efficient {N}ewton barrier method for minimizing a sum of {E}uclidean norms},
         JOURNAL = {SIAM Journal of Optimization},
         YEAR = 1996,
         VOLUME = 6,
         NUMBER = 1,
         PAGES = {74--95},
         MONTH = {February}
        )

@TECHREPORT(AnCh:95a,
           AUTHOR = {Knud D.~Andersen and Edmund Christiansen},
           TITLE = {A {N}ewton {B}arrier method for {M}inimizing a {S}um of {E}uclidean {N}orms subject to linear equality constraints},
           INSTITUTION = {Odense University},
           YEAR = 1995,
           TYPE = {Preprint},
           NUMBER = {95-07},
           ADDRESS = {Department of Mathematics and Computer Science, Odense University, Denmark},
           MONTH = {February~13},
           NOTE = {Electronically distributed as \verb!ftp://ftp.imada.ou.dk/pub/papers/preprints95/preprint-95-07.ps.gz!}
            )

@UNPUBLISHED(AnCh:95b,
             AUTHOR = {Knud D.~Andersen and Edmund Christiansen},
             TITLE = {A symmetric {P}rimal-{D}ual {N}ewton method for {M}inimizing a {S}um of {N}orms},
             MONTH = {April~11},
             YEAR = 1995,
             NOTE = {Electronically distributed as \verb!ftp://info.mcs.anl.gov/pub/tech_reports/ip/pdsn.ps.Z!}
            )

@UNPUBLISHED(AnChOv:94,
             AUTHOR = {Knud D.~Andersen and Edmund Christiansen and Michael L.~Overton},
             TITLE = {Computing limit loads by minimizing a sum of norms},
             NOTE = {Unpublished},
             MONTH = {October~17},
             YEAR = 1994
            )

@ARTICLE(AnPa:94,
         TITLE = {Algorithms for weber facility location in the presence of forbidden regions and/or barriers to travel},
         AUTHOR = {Y. P. Aneja and M. Parlar},
         JOURNAL = {Transportation Science},
         YEAR = 1994,
         VOLUME = 28,
         PAGES = {70--76}
        )

@ARTICLE(Armijo:66,
         AUTHOR = {Larry Armijo},
         TITLE = {Minimization of functions having {L}ipschitz continuous first partial derivatives},
         JOURNAL = {Pacific Journal of Mathematics},
         YEAR = 1966,
         VOLUME = 16,
         NUMBER = 1,
         PAGES = {1--3}
        )

@BOOK(Atkinson:78,
      AUTHOR = {Kendall E. Atkinson},
      TITLE = {An introduction to numerical analysis},
      PUBLISHER = {John Wiley {\&} Sons},
      YEAR = 1978,
      ADDRESS = {New York, Chichester, Brisbane, Toronto},
     )

@ARTICLE(Avellaetal:98,
         AUTHOR = {P[asquale] Avella and 
                   S[tefano] Benati and
                   L[{\'a}zaro] C{\'a}novas Martinez and
                   K[evin] Dalby and
                   D[onatella] Di~Girolamo and
                   B[ranka] Dimitrijevic and
                   G[ianpaolo] Ghiani and
                   I[oannis] Giannikos and
                   N[ili] Guttmann and
                   T[im] H[elge] Hultberg and
                   J[{\"o}rg] Fliege and 
                   A[lfredo] Marin and
                   M[anuel] Mu{\~n}os M{\'a}rques and
                   M[alick] M[ody] Ndiaye and
                   S[tefan~R.]~Nickel and
                   P[eter~H.]~Peeters and 
                   D[ionisio] P{\'e}rez Brito and
                   S[ilvia] Policastro and
                   F[rancisco] A[lexandre]~Saldanha de Gama and
                   P[ietro] Zidda},
         TITLE = {Some personal views on the current state and future of {L}ocational {A}nalysis},
         JOURNAL = {European Journal of Operations Research},
         VOLUME = 104,
         NUMBER = 2,
         PAGES = {269--287},
         MONTH = {January~16},
         YEAR = 1998,
         NOTE = {Feature Issue. Twelveth EURO Summer Institute: 
                 Locational Analysis. Guest Editor: J[aime] Barcel{\'o}. 
                 Also published as Report in Wirtschaftsmathematik, No.~4. 
                 Fachbereich Mathematik, Universit{\"a}t Kaiserslautern, 
                 Germany.}
        )

@ARTICLE(Ballou:68,
         AUTHOR = {R. Ballou},
         TITLE = {Dynamic {W}arehouse {L}ocation {A}nalysis},
         JOURNAL = {Journal of Marketing Research},
         YEAR = 1968,
         VOLUME = 5,
         PAGES = {271--276}
        )

@Article{BaL88,
  author =   "Rajan Batta and Lloyd A. Leifer",
  title =    "On the accuracy of demand point solutions
                  to the planar, Manhattan metric, p-median problem,
                  with and without barriers to travel",
  journal =  "Computers and Operations Research",
  year =     1988,
  volume =   3,
  pages =    "253-262"
}

@article{Beguin79,
        author = {{Beguin}, H. and {Thisse}, J. F.},
        title = "An Axiomatic Approach to Geographical Space",
        journal = {Geographical Analysis },
        volume = 11,
        pages = "325--341",
        year = 1979     }       
   
@ARTICLE(Benson:79,
         AUTHOR = {Harold P.~Benson},
         TITLE = {An {I}mproved {D}efinition of {P}roper {E}fficiency for {V}ector {M}aximization with {R}espect to {C}ones},
         JOURNAL = JOMAA,
         YEAR = 1979,
         VOLUME = 71,
         PAGES = {232--241}
        )

@ARTICLE(Berens:88,
         AUTHOR = {Wolfgang Berens},
         TITLE = {The suitability of the weighted $l_p$-norm in estimating actual road distances},
         JOURNAL = EJOR,
         YEAR = 1988,
         VOLUME = 34,
         PAGES = {39-43}
        )

@Article{BK85,
  author =   "Wolfgang Berens and Franz-Josef K{\"o}rling",
  title =    "Estimating road distances by mathematical
                  functions",
  journal =  "European Journal of Operational Research",
  year =     1985,
  volume =   21,
  pages =    "54-56"
}

@Article{BK88,
  author =   "Wolfgang Berens and Franz-Josef K{\"o}rling",
  title =    "On estimating road distances by mathematical
                  functions --- a rejoinder",
  journal =  "European Journal of Operational Research",
  year =     1988,
  volume =   36,
  pages =    "254-255"
}

@BOOK(Berge:63,
      AUTHOR = {Claude Berge},
      TITLE = {Topological Spaces},
      PUBLISHER = {Oliver {\&} Boyd},
      YEAR = 1963,
      ADDRESS = {Edinburgh, London}
     )

@BOOK(BeGuHo:65,
      AUTHOR = {Claude Berge and A[lain] Ghuila-Houri},
      TITLE = {Programming, Games and Transportation Networks},
      PUBLISHER = {Wiley},
      YEAR = 1965,
      ADDRESS = {New York}
     )

@BOOK(BeGuHo:69,
      AUTHOR = {C[laude] Berge and A[lain] Ghuila-Houri},
      TITLE = {Programme, Spiele, Transportnetze},
      PUBLISHER = {B. G. Teubner Verlagsgesellschaft},
      YEAR = 1969,
      ADDRESS = {Leipzig},
      NOTE = {2. verbesserte Auflage}
     )

@BOOK(Beutelspacher:91,
      AUTHOR = {Albrecht Beutelspacher},
      TITLE = {,,Das ist o.~B.~d.~A. trivial''},
      PUBLISHER = VI,
      YEAR = 1991,
      ADDRESS = {Braunschweig, Wiesbaden},
     )

@BOOK(Bourbaki:64,
      AUTHOR = {N.~Bourbaki},
      TITLE = {Topologie G{\'e}nerale},
      PUBLISHER = {Hermann},
      YEAR = 1964,
      VOLUME = {Livre~III},
      SERIES = {{\'E}l{\'e}mente des Math{\'e}matique, Premi{\`e}r Partie, Les Structures Fondamentales de l'Analyse},
      ADDRESS = {115 Boulevard Saint-Germain, Paris~VI}
     )

@ARTICLE(BrCh:89,
         AUTHOR = {M.~L.~Brandeau and S.~S.~Chiu},
         TITLE = {An overview of representative problems in location research},
         JOURNAL = MS,
         YEAR = 1989,
         VOLUME = 35,
         PAGES = {645--675}
        )

@Article{BDL94,
  author =   "Jack Brimberg and Paul D. Dowling and R. F. Love",
  title =    "The weighted one-two norm distance model: Empirical
                  validation and confidence interval estimation",
  journal =  "Location Science",
  year =     1994,
  volume =   2,
  pages =    "91-100"
}

@Article{BaL91,
  author =   "J. Brimberg and R. F. Love",
  title =    "Estimating travel distances by the weighted
          $l_p$-norm",
  journal =  "Naval Research Logistics",
  year =     1991,
  volume =   38,
  pages =    "241-259"
}

@article{Brimberg92,
        author = {{Brimberg}, J. and {Love}, R. F.},
        title = "A new distance function for modeling travel distances in a transportation network",
        journal = {Transportation science},
        volume = 26,
        pages = "129--137",
        month = May,
        year = 1992   } 
  
@ARTICLE(BrLo:93,
         AUTHOR = {Jack Brimberg and Robert F.~Love},
         TITLE = {Directional bias of the $l_p$-Norm},
         JOURNAL = EJOR,
         YEAR = 1993,
         VOLUME = 67,
         PAGES = {287--294}
        )

@INCOLLECTION(BrLo:95,
              AUTHOR = {Jack Brimberg and Robert F.~Love},
              TITLE = {Estimating Distances},
              PUBLISHER = {Springer-Verlag},
              YEAR = 1995,
              EDITOR = {Zvi Drezner},
              SERIES = {Springer {S}eries in {O}perations {R}esearch},   
              CHAPTER = {1},
              PAGES = {9--32},
              CROSSREF = {Drezner:95}
       )

@BOOK(Brondsted:83,
      AUTHOR = {Arne Br{\o}ndsted},
      TITLE = {An Introduction to Convex Polytopes},
      PUBLISHER = SP,
      YEAR = 1983,
      ADDRESS = {New York}
     )

@Book{BaH90,
  author =   "Fred Buckley and Frank Harary",
  title =    "Distance in graphs",
  publisher =    "Addison-Wesley Publishing Company",
  year =     1990
}

@ARTICLE(Bull:88,
         AUTHOR = {Hans-Ulrich Bull},
         TITLE = {Axiomatic considerations in multi-objective location theory},
         JOURNAL = EJOR,
         YEAR = 1988,
         VOLUME = 32,
         PAGES = {363--367}
        )

@ARTICLE(Burdet:74,
         AUTHOR = {Claude-Alain Burdet},
         TITLE = {Generating all the faces of a polyhedron},
         JOURNAL = {SIAM Journal of Applied Mathematics},
         YEAR = 1974,
         VOLUME = 26,
         NUMBER = 3,
         PAGES = {479--489},
         MONTH = {Mai}
        )

@ARTICLE(CaCh:80,
         AUTHOR = {Paul Calamai and Christakis Charalambous},
         TITLE = {Solving multifacility problems involving {E}uclidean distances},
         JOURNAL = {Naval Research Logistics Quarterly},
         YEAR = 1980,
         VOLUME = 27,
         PAGES = {609--620}
        )

@ARTICLE(CaCo:80b,
         AUTHOR = {P.~H.~Calamai and A.~R.~Conn},
         TITLE = {A stable algorithm for solving the multifacility location problem involving {E}uclidean distances},
         JOURNAL = {SIAM Journal on Scientific and Statistical Computing},
         YEAR = 1980,
         VOLUME = 1,
         PAGES = {512--526}
        )

@INPROCEEDINGS(CaCo:82,
              AUTHOR = {P[aul] H. Calamai and A[ndrew] R. Conn},
              TITLE = {A second order method for solving the continuous multifacility location problem},
              BOOKTITLE = {Numerical Analysis: Proceedings of the Ninth Biennal Conference, Dundee, Scotland},
              YEAR = 1982,
              EDITOR = {G.~A.~Watson},
              NUMBER = 912,
              SERIES = {Lecture Notes in Mathematics},
              PAGES = {1--25},
              ADDRESS = {Berlin, Heidelberg, New York}
             )

@ARTICLE(CaCo:87,
         AUTHOR = {Paul H. Calamai and Andrew R. Conn},
         TITLE = {A projected {N}ewton method for $l_p$ norm location problems},
         JOURNAL = MAPRO,
         YEAR = 1987,
         VOLUME = 38,
         PAGES = {75--109}
        )

@UNPUBLISHED(CaPl:95,
             AUTHOR = {Emilio Carrizosa and Frank Plastria},
             TITLE = {Locating an {U}ndesirable {F}acility by {G}eneralized
{C}utting {P}lanes},
             YEAR = 1995,
             MONTH = {June~13},
             NOTE = {Accepted for \emph{Mathematics of Operations Research}}
            )

@ARTICLE(CaRo:97,
         AUTHOR = {Emilio Carrizosa and Antonio M.~Rodr{\'\i}guez-Ch{\'\i}a},
         TITLE = {{W}eber problem with alternative transportation systems},
         JOURNAL = EJOR,
         YEAR = 1997,
         VOLUME = 97,
         NUMBER = 1,
         MONTH = {February~16},
         PAGES = {87--93}
        )

@BOOK(Cech:66,
      AUTHOR = {Eduard {\v{C}}ech},
      TITLE = {Topological Spaces},
      PUBLISHER = {Interscience Publishers, a division of John Wiley \& Sons},
      YEAR = 1966,
      ADDRESS = {London, New York, Sidney},
      NOTE = {Revidiert von Zden{\v{e}}k Frol{\'\i}k und Miroslav Kat{\v{e}}tov}
     )		

@ARTICLE(ChFrKo:80,
         AUTHOR = {L.~G.~Chalmet and R.~L.~Francis and A.~Kohen},
         TITLE = {Finding efficient solutions for rectilinear distance location problem efficiently},
         JOURNAL = EJOR,
         YEAR = 1980,
         VOLUME = 6,
         PAGES = {117--124}
        )

@ARTICLE(ChTa:89,
         AUTHOR = {P.~Chandrasekharan and A.~Tamir},
         TITLE = {Open questions concerning {W}eizsfeld's algorithm for the {F}ermat-{W}eber problem},
         JOURNAL = MAPRO,
         YEAR = 1989,
         VOLUME = 44,
         PAGES = {293--295}
        )

@ARTICLE(ChHeLo:78,
         AUTHOR = {J. A. Chatelon and D. W. Hearn and T. J. Lowe},
         TITLE = {A subgradient algorithm for certain minimax and minisum problems},
         JOURNAL = MAPRO,
         YEAR = 1978,
         VOLUME = 15,
         PAGES = {130--145}
        )
		
@ARTICLE(ChHeLo:82,
         AUTHOR = {J.~A.~Chatelon and D.~W.~Hearn and T.~J.~Lowe},
         TITLE = {A {S}ubgradient {A}lgorithm for certain {M}inimax and {M}inisum {L}ocation {P}roblems: the {C}onstrained {C}ase},
         JOURNAL = {SIAM Journal on Control and Optimization},
         YEAR = 1982,
         VOLUME = 20,
         PAGES = {455--469}
        )

@TECHREPORT(ChHaJaTu:91:rep,
            AUTHOR = {P[ey]-C[hun] Chen and  P[ierre] Hansen and B[rigitte] Jaumard and H[oang] Tuy},
	    TITLE = {Weber's problem with attraction and repulsion},
	    INSTITUTION = {RUTCOR, The State University of New Jersey},
	    YEAR = 1991,
	    TYPE = {Research Report},
	    NUMBER = {62--91},
	    ADDRESS = {State University of New Jersey, Rutgers, PO Box 5062, New Brunswick, NJ 08903--5062},
            NOTE = {Published as~\cite{ChHaJaTu:92}}
		   )
		   
@ARTICLE(ChHaJaTu:92,
         AUTHOR = {Pey-Chun Chen and  Pierre Hansen and Brigitte Jaumard and Hoang Tuy},
         TITLE = {Weber's Problem with Attraction and Repulsion},
         JOURNAL = {Journal of Regional Science},
         YEAR = 1992,
         VOLUME = 32,
         NUMBER = 4,
         PAGES = {467--486}
        )

@TECHREPORT(ChHaJaTu:94,
            AUTHOR = {Pey-Chun Chen and  Pierre Hansen and Brigitte Jaumard and Hoang Tuy},
	    TITLE = {Solution of the {M}ultisource {W}eber and {C}onditional {W}eber {P}roblems by {D}.-{C}. {P}rogramming},
	    INSTITUTION = {{\'E}cole Polytechnique},
	    YEAR = 1992,
	    TYPE = {Les Cahiers du GERAD / Groupe d'{\'e}tudes et de recherche en analyse des d{\'e}cisions},
            NUMBER = {G--92--35},
            ADDRESS = {Montreal, Quebec},
            MONTH = {September},
            NOTE = {Revised: March 1994}
           )

@ARTICLE(CoMi:97,
         AUTHOR = {R[oberto] Cominetti and C[hristian] Michelot},
         TITLE = {Sufficient conditions for coincidence in $\ell_1$-minisum multifacility location problems},
         JOURNAL = {Operations Research Letters},
         YEAR = 1997,
         VOLUME = 20,
         PAGES = {179--185},
         NOTE = {Received 1~July 1995; revised 1~August 1996}
     )

@UNPUBLISHED(CoOv:94,
             AUTHOR = {Andrew R.~Conn and Michael L.~Overton},
             TITLE = {A {P}rimal-{D}ual {I}nterior {P}oint {M}ethod for {M}inimizing a {S}um of {E}uclidean {D}istances},
             NOTE = {Unpublished},
             MONTH = {July~20},
             YEAR = 1994
            )

@ARTICLE(Cooper:63,
         AUTHOR = {L. Cooper},
         TITLE = {Location-allocation problems},
         JOURNAL = OR,
         YEAR = 1963,
         VOLUME = 11,
         PAGES = {331--343}
        )

@BOOK(CoBhLe:77,
      AUTHOR = {Leon Cooper and U.~Narayan Bhat and Larry J.~LeBlanc},
      TITLE = {Introduction to Operations Research Models},
      PUBLISHER = {W.~B.~Saunders Company},
      ADDRESS = {Philadelphia, London, Toronto},
      YEAR = 1977
     )

@ARTICLE(CoFi:78,
         AUTHOR = {F. Cordellier and J. Ch. Fiorot},
         TITLE = {On the {F}ermat-{W}eber problem with convex cost functions},
         JOURNAL = MAPRO,
         YEAR = 1978,
         VOLUME = 14,
         PAGES = {295--311}
        )

@BOOK(DaLuRi:88,
      AUTHOR = {Dal Cin, Mario and Lutz, Joachim and Risse, Thomas},
      TITLE = {Programmierung in Modula-2},
      PUBLISHER = TE,
      YEAR = 1988,
      VOLUME = 100,
      SERIES = TE # { Studienskripten: Informatik},
      ADDRESS = {Stuttgart},
      EDITION = {Dritte}
     )

@ARTICLE(Dax:86:opt,
         AUTHOR = {Achiya Dax},
         TITLE = {A note on {O}ptimality {C}onditions for the {E}uclidean {M}ultifacility {L}ocation {P}roblems},
         JOURNAL = MAPRO,
         YEAR = 1986,
         VOLUME = 36,
         PAGES = {72--80}
        )

@ARTICLE(Dax:86:eff,
         AUTHOR = {Achiya Dax},
         TITLE = {An {E}fficient {A}lgorithm for {S}olving {R}ectilinear {M}ultifacility {L}ocation {P}roblems},
         JOURNAL = {IMA Journal of Numerical Analysis},
		 YEAR = 1986,
		 VOLUME = 6,
		 PAGES = {343--355}
        )

@ARTICLE(DeSt:83,
         AUTHOR = {Ron S.~Dembo and Trond Steihaug},
         TITLE = {Truncated-{N}ewton {A}lgorithms for {L}arge-{S}cale {U}nconstrained {O}ptimization },
         JOURNAL = {Mathematical Programming},
         YEAR = 1983,
         VOLUME = 26,
         PAGES = {190--212}
        )

@BOOK(DeHo:93,
      AUTHOR = {P.~Deuflhard and A.~Hohmann},
      TITLE = {Numerische {M}athemati{k~I}},
      PUBLISHER = {de Gruyter},
      YEAR = 1993,
      SERIES = {Lehrbuch}
     )

@TECHREPORT(DeGrLa:90,
            AUTHOR = {M. Deza and M. Gr{\"o}tschel and M. Laurent},
            TITLE = {Complete {D}escription of {S}mall {M}ulticut {P}olytopes},
            INSTITUTION = {Universit{\"a}t Augsburg},
            YEAR = 1990,
            TYPE = {Report},
            NUMBER = {217},
            ADDRESS = {Institut f{\"u}r Mathematik, Universit{\"a}tsstra{\"s}e 8, D-8900 Augsburg},
	    NOTE = {Schwerpunktprogramm der Deutschen Forschungsgemeinschaft: Anwendungsbezogene Optimierung und Steuerung}
           )

@BOOK(Domschke:81,
      AUTHOR = {Wolfgang Domschke},
      TITLE = {Logistik: {T}ransport},
      PUBLISHER = {Oldenbourg},
      YEAR = 1981,
      SERIES = {Oldenbourgs Lehr- und Handb{\"u}cher der Wirtschafts- und Sozialwissenschaften},
      ADDRESS = {R. Oldenbourg Verlag, Rosenheimer Str. 145, 8000 M{\"u}nchen 80},
      NOTE = {Band 1 der Reihe ,,Logistik''}
        )

@BOOK(Domschke:82,
      AUTHOR = {Wolfgang Domschke},
      TITLE = {Logistik: {R}undreisen und {T}ouren},
      PUBLISHER = {Oldenbourg},
      YEAR = 1982,
      SERIES = {Oldenbourgs Lehr- und Handb{\"u}cher der Wirtschafts- und Sozialwissenschaften},
      ADDRESS = {R. Oldenbourg Verlag, Rosenheimer Str. 145, 8000 M{\"u}nchen 80},
      NOTE = {Band 2 der Reihe ,,Logistik''}
        )

@BOOK(DoDr:90,
      AUTHOR = {Wolfgang Domschke and Andreas Drexl},
      TITLE = {Logistik: {S}tandorte},
      PUBLISHER = {Oldenbourg},
      YEAR = 1990,
      SERIES = {Oldenbourgs Lehr- und Handb{\"u}cher der Wirtschafts- und Sozialwissenschaften},
      ADDRESS = {R. Oldenbourg Verlag, Rosenheimer Str. 145, 8000 M{\"u}nchen 80},
      EDITION = {dritte, erg{\"a}nzte},
      NOTE = {Band 3 der Reihe ,,Logistik''},
        )

@ARTICLE(Drezner:89,
         AUTHOR = {Z[vi] Drezner},
         TITLE = {Stochastic analysis of the {W}eber problem on the sphere},
         JOURNAL = JORS,
         YEAR = 1989,
         VOLUME = 40,
         PAGES = {1137--1144}
        )

@ARTICLE(DrWe:80:,
         AUTHOR = {Z. Drezner and G. O. Wesolowsky},
         TITLE = {Single facility $l_p$-distance minimax location},
         JOURNAL = {SIAM Journal of algebraic and discrete Methods},
         YEAR = 1980,
         VOLUME = 1,
         NUMBER = 3,
         PAGES = {315--321},
         MONTH = {September}
        )
		
@ARTICLE(DreStWe:85,
         AUTHOR = {Z[vi] Drezner and Steiner and [G. O.] Wesolowsky},
         TITLE = {One-facility location with rectilinear tour distances},
         JOURNAL = {Naval Research Logistics Quartely},
         YEAR = 1985,
         VOLUME = 32,
         PAGES = {391--405}
        )

@ARTICLE(DrWe:78:minisum,
         AUTHOR = {Z[vi] Drezner and G. O. Wesolowsky},
         TITLE = {A trajectory method for the optimization of the multifacility location problem},
         JOURNAL = MS,
         YEAR = 1978,
         VOLUME = 24,
         PAGES = {1507--1514}
        )

@ARTICLE(DrWe:78:minimax,
         AUTHOR = {Z[vi] Drezner and G.~O.~Wesolowsky},
         TITLE = {A new method for the multifacility minimax location problem},
         JOURNAL = JORS,
         YEAR = 1978,
         VOLUME = 29,
         PAGES = {1095--1101}
        )

@ARTICLE(DrWe:89,
         AUTHOR = {[Zvi] Drezner and [G.~O.] Wesolowsky},
         TITLE = {The asymmetric distance location problem},
         JOURNAL = TS,
         YEAR = 1989,
         VOLUME = 23,
         PAGES = {261--207}
        )

@ARTICLE(DrWe:91:neg,
         AUTHOR = {Zvi Drezner and George O. Wesolowsky},
         TITLE = {The {W}eber problem on the plane with some negative weights},
         JOURNAL = {INFOR},
         YEAR = 1991,
         VOLUME = 29,
         NUMBER = 2,
         PAGES = {87--99},
         MONTH = {May}
        )

@ARTICLE(DrWe:91:time,
         AUTHOR = {Zvi Drezner and G.~O.~Wesolowsky},
         TITLE = {Facility location when demand is time dependent},
         JOURNAL = {Naval Research Logistics},
         YEAR = 1991,
         VOLUME = 38,
         NUMBER = 5,
         PAGES = {763--777}
        )

@article{Durier85,
        author = {{Durier}, R. },
        title = "Geometrical properties of the Fermat-Weber problem",
        journal = {European Journal of Operational Research },
        volume = 20,
        page = "332--342",
        year = 1985      }
 
@article{Durier86,
        author = {{Durier}, R. and {Michelot}, C.},
        title = "Set of efficients points in a normed space",
        journal = {Journal of Mathematical Analysis and applications},
        volume = 117,
        pages = "506--528",
        year = 1986     }
 
a@ARTICLE(Durier:87,
         AUTHOR = {Roland Durier},
         TITLE = {Meilleure approximation en norme vectorielle et th{\'e}orie de la localisation},
         JOURNAL = {Mathematical Modelling and Numerical Analysis},
         YEAR = 1987,
         VOLUME = 21,
         NUMBER = 4,
         PAGES = {605--626}
        )

@ARTICLE(Durier:89:majrule,
         AUTHOR = {R[oland] Durier},
         TITLE = {Continuous location theory under majority rule},
         JOURNAL = {Mathematics of Operation Research},
         YEAR = 1989,
         VOLUME = 14,
         NUMBER = 2,
         PAGES = {258--274},
         MONTH = {May}
        )

@ARTICLE(Durier:90:pareto,
         AUTHOR = {Roland Durier},
         TITLE = {On {P}areto Optima, the {F}ermat-{W}eber problem, and polyhedral gauges},
         JOURNAL = MAPRO,
         YEAR = 1990,
         VOLUME = 47,
         PAGES = {65--79}
        )

@ARTICLE(Durier:88,
         AUTHOR = {R[oland] Durier},
         TITLE = {Weighting {F}actor {R}esults in {V}ector {O}ptimization},
         JOURNAL = JOTA,
         YEAR = 1988,
         VOLUME = 58,
         NUMBER = 3,
         PAGES = {411--430},
         MONTH = {September}
        )

@ARTICLE(DuMi:86,
         AUTHOR = {Roland Durier and Christian Michelot},
         TITLE = {Sets of {E}fficient Points in a {N}ormed {S}pace},
         JOURNAL = JOMAA,
         YEAR = 1986,
         VOLUME = 117,
         PAGES = {506--528}
        )

@ARTICLE(DuMi:85,
         AUTHOR = {Roland Durier and Christian Michelot},
         TITLE = {Geometrical properties of the {F}ermat-{W}eber problem},
         JOURNAL = EJOR,
         YEAR = 1985,
         VOLUME = 20,
         PAGES = {332--343}
        )

@ARTICLE(DyPr:77,
         AUTHOR = {M.~E.~Dyer and L.~G.~Proll},
         TITLE = {An algorithm for determining all extreme points of a convex polytope},
         JOURNAL = MAPRO,
         YEAR = 1977,
         VOLUME = 12,
         PAGES = {81--96}
        )

@ARTICLE(DyPr:82,
         AUTHOR = {M.~E.~Dyer and L.~G.~Proll},
         TITLE = {An improved vertex enumeration algorithm},
         JOURNAL = EJOR,
         YEAR = 1982,
         VOLUME = 9,
         PAGES = {359--368}
        )

@ARTICLE(Eckhardt:80,
         AUTHOR = {U.~Eckhardt},
         TITLE = {Webers problem and {W}eizsfelds algorithm in general spaces},
         JOURNAL = MAPRO,
         YEAR = 1980,
         VOLUME = 18,
         PAGES = {186--196}
        )

@ARTICLE(EdKa:72,
         AUTHOR = {J.~Edmonds and R.~M.~Karp},
         TITLE = {Theoretical improvements in algorithmic efficiency for network flow problems},
         JOURNAL = {Journal of the Association of Computing Machinery},
         YEAR = 1972,
         VOLUME = 19,
         PAGES = {248--262}
        )

@ARTICLE(EiLa:89,
         AUTHOR = {H. A. Eiselt and G. Laporte},
         TITLE = {Competitive spatial models},
         JOURNAL = EJOR,
         YEAR = 1989,
         VOLUME = 39,
         PAGES = {231--242}
         )

@INCOLLECTION(EiLa:95,
              AUTHOR = {H.~A.~Eiselt and Gilbert Laporte},
              TITLE = {Objectives in {L}ocation {P}roblems},
              BOOKTITLE = {Facility {L}ocation: {A} {S}urvey of {A}pplications and {M}ethods},
              PUBLISHER = {Springer Verlag},
              YEAR = 1995,
              EDITOR = {Zvi Drezner},
              SERIES = {Springer {S}eries in {O}perations {R}esearch},   
              CHAPTER = {8},
              PAGES = {151--180},
              CROSSREF = {Drezner:95}
             )

@ARTICLE(ElHe:72,
         AUTHOR = {J.~Elzinga and D.~W.~Hearn},
         TITLE = {Geometrical solutions for some minimax location problems},
         JOURNAL = TS,
         YEAR = 1972,
         VOLUME = 6,
         PAGES = {329--394}
        )

@ARTICLE(ErNe:89,
         AUTHOR = {Erhan Erkut and Susan Newman},
         TITLE = {Analytical models for locating undesirable facilities},
         JOURNAL = EJOR,
         YEAR = 1989,
         VOLUME = 40,
         PAGES = {275--291}
        )

@TECHREPORT(Ertl:96,
            AUTHOR = {Gerhard Ertl},
            TITLE = {Shortest Path Calculation in Large Road Networks},
            INSTITUTION = {Spezialforschungsbereich F~003 (Optimierung und Kontrolle), Projektbereich Diskrete Optimierung},
            YEAR = 1996,
            TYPE = {Bericht},
            NUMBER = 69,
            ADDRESS = {Karl-Franzens-Universit{\"a}t Graz \& Technische Universit{\"a}t Graz},
            MONTH = {Mai},
            NOTE = {Electronically distributed via {\tt http://www.opt.math.tu-graz.ac.at/cgi-bin/replist}}
           )

@ARTICLE(EyWhWi:73,
         AUTHOR = {J.~W.~Eyster and J.~A.~White and W.~W.~Wierwille},
         TITLE = {On {S}olving {M}ultifacility {L}ocation {P}roblems {U}sing a {H}yperboloid {A}pproximation {P}rocedure},
         JOURNAL = {AIIE Transactions},
         YEAR = 1973,
         VOLUME = 5,
         PAGES = {1--6}
        )

@MASTERSTHESIS(Fajfar:96,
      AUTHOR = {Andrej Fajfar},
      TITLE = {{V}erbesserung von {S}chnittebenenverfahren zur {L}{\"o}sung von {M}inisum-{M}ultilokationsproblemen},
      SCHOOL = {Universit{\"a}t Dortmund},
      YEAR = 1996,
      ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221 Dortmund},
      MONTH = {M{\"a}rz},
      TYPE = {{D}iplomarbeit}
     )

@BOOK(Falconer:90,
      AUTHOR = {Kenneth J. Falconer},
      TITLE = {Fractal geometry},
      PUBLISHER = {John Wiley \& Sons Ltd.},
      YEAR = 1990,
      ADDRESS = {Chichester, West Sussex, England},
     )

@BOOK(Fermat,
      AUTHOR = {Pierre de Fermat},
      TITLE = {{\OE}uvres des Fermat},
      PUBLISHER = {Paul Tannery und Charles Henry},
      YEAR = 1891,
      VOLUME = {1},
      ADDRESS = {Paris}
     )

@BOOK(FiMc:68,
      AUTHOR = {Anthony V. Fiacco and Garth P. McCormick},
      TITLE = {Nonlinear {P}rogramming: {S}equential {U}nconstrained {M}inimization {T}echniques},
      PUBLISHER = {John Wiley and Sons, Inc.},
      YEAR = 1968,
      ADDRESS = {New York, London, Sidney, Toronto}
     )

@Article{FaW78,
  author =   "R. A. Fildes and J. B. Westwood",
  title =    "The development of linear distance functions
                  for distribution analysis",
  journal =  "Journal of the Operational Research Society",
  year =     1978,
  volume =   29,
  pages =    "585--592"
}

@BOOK(Fischer:86,
      AUTHOR = {Gerd Fischer},
      TITLE = {Lineare Algebra},
      PUBLISHER = VI,
      YEAR = 1986,
      VOLUME = 17,
      SERIES = {Vieweg-Studium: Grundkurs Mathematik},
      ADDRESS = {Braunschweig, Wiesbaden},
      EDITION = {Neunte}
     )

@BOOK(FiLi:88,
      AUTHOR = {Wolfgang Fischer and Ingo Lieb},
      TITLE = {Funktionentheorie},
      PUBLISHER = VI,
      YEAR = 1988,
      VOLUME = 47,
      SERIES = {Vieweg-Studium: Aufbaukurs Mathematik},
      ADDRESS = {Braunschweig, Wiesbaden},
      EDITION = {F{\"u}nfte}
     )

@BOOK(Fletcher:80,
      AUTHOR = {Roger Fletcher},
      TITLE = {{P}ractical {M}ethods of {O}ptimization},
      PUBLISHER = {John Wiley \& Sons},
      YEAR = 1980,
      VOLUME = {1: {U}nconstrained {O}ptimization},
      ADDRESS = {Chichester, New York, Brisbane, Toronto}
     )

@MASTERSTHESIS(Fliege:93,
      AUTHOR = {J{\"o}rg Fliege},
      TITLE = {Nichtdiskrete {M}ultilokationsprobleme: {K}oinzidenzbedingungen und effiziente {P}unkte},
      SCHOOL = {Universit{\"a}t Dortmund},
      YEAR = 1993,
      ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221 Dortmund, Germany},
      MONTH = {February},
      TYPE = {{D}iplomarbeit}
     )

@TECHREPORT(Fliege:95a,
            AUTHOR = {J{\"o}rg Fliege},
			TITLE = {Some {N}ew {C}oincidence {C}onditions in {M}inisum {M}ultifacility {L}ocation {P}roblems with {M}ixed {G}auges},
			INSTITUTION = {Universit{\"a}t Dortmund},
			YEAR = 1995,
			TYPE = {Ergebnisberichte Angewandte Mathematik},
			NUMBER = 125,
			ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221~Dortmund, Germany},
			MONTH = {January},
			NOTE = {Published as \cite{Fliege:94}},
		   )

@TECHREPORT(Fliege:95b,
            AUTHOR = {J{\"o}rg Fliege},
			TITLE = {How to {D}etect {N}ondifferentiabilities and to {R}educe {D}imension in {M}inisum {M}ultifacility {L}ocation {P}roblems},
			INSTITUTION = {Universit{\"a}t Dortmund},
			YEAR = 1995,
			TYPE = {Ergebnisberichte Angewandte Mathematik},
			NUMBER = 126,
			ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221~Dortmund, Germany},
			MONTH = {January},
			NOTE = {Also published as~\cite{Fliege:97}},
		   )

@INPROCEEDINGS(Fliege:94,
               CROSSREF = {BoKa:94},
               AUTHOR = {J{\"o}rg Fliege},
               TITLE = {Some new coincidence conditions in minisum multifacility location problems with mixed gauges},
			   PAGES = {49--60}
            )

@UNPUBLISHED(Fliege:95ESI,
             AUTHOR = {J{\"o}rg Fliege},
             TITLE = {Coincidence {C}onditions in {M}ultifacility {L}ocation {P}roblems with {P}ositive and {N}egative {W}eights},
             NOTE = {Talk at the Twelfth EURO Summer Institute on Locational Analysis, Puerto de La Cruz, Tenerife, Spain. To be published as~\cite{Fliege:98}},
             MONTH = {July},
             YEAR = 1995
            )

@ARTICLE(Fliege:97,
         AUTHOR = {J{\"o}rg Fliege},
         TITLE = {Nondifferentiability {D}etection and {D}imensionality {R}eduction in {M}inisum {M}ultifacility {L}ocation {P}roblems},
         JOURNAL = JOTA,
         VOLUME = 94,
         NUMBER = 2,
         PAGES = {365--380},
         MONTH = {August},
         YEAR = 1997
        )

@UNPUBLISHED(Fliege:97:ip,
             AUTHOR = {J{\"o}rg Fliege},
             TITLE = {Some polynomial time algorithms for multifacility location problems with mixed gauges},
             MONTH = {February},
             YEAR = 1997,
             NOTE = {Talk held at Modellierungsseminar im Rahmen von MISP (Location Planning: Theory and Application), Universit\"at Kaiserslautern, Kaiserslautern, Germany}
            )

@PHDTHESIS(Fliege:97:diss,
           AUTHOR = {J{\"o}rg Fliege},
           TITLE = {{E}ffiziente {D}imensionsreduktion in {M}ultilokationsproblemen},
           SCHOOL = {Universit{\"at} Dortmund},
           YEAR = 1997,
           MONTH = {June},
           ADDRESS = {Fachbereich Mathematik, Universit{\"at} Dortmund, 44221 Dortmund},
           NOTE = {Shaker Verlag, Aachen, Germany (An english translation is available from the author on request)}
          )

@TECHREPORT(Fliege:97:note,
            AUTHOR = {J{\"o}rg Fliege},
	    TITLE = {A note on "On {P}areto optima, the {F}ermat-{W}eber problem, and polyhedral gauges"},
	    INSTITUTION = {Universit{\"a}t Dortmund},
	    YEAR = 1997,
	    TYPE = {Ergebnisberichte Angewandte Mathematik},
	    NUMBER = 144,
	    ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221~Dortmund, Germany},
            MONTH = {August},
	    NOTE = {Submitted}
		   )

@TECHREPORT(Fliege:97:november,
            AUTHOR = {J{\"o}rg Fliege},
            TITLE = {Coincidence {C}onditions in {M}ultifacility {L}ocation {P}roblems with {P}ositive and {N}egative {W}eights},
			INSTITUTION = {Universit{\"a}t Dortmund},
			YEAR = 1997,
			TYPE = {Ergebnisberichte Angewandte Mathematik},
			NUMBER = 148,
			ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221~Dortmund, Germany},
			MONTH = {November},
			NOTE = {Published as~\cite{Fliege:98}}
		   )

@ARTICLE(Fliege:98,
         AUTHOR = {J{\"o}rg Fliege},
         TITLE = {Coincidence conditions in multifacility location problems with
positive and negative weights},
         JOURNAL = {European Journal of Operations Research},
         VOLUME = 104,
         NUMBER = 2,
         PAGES = {310--320},
         MONTH = {January 16},
         YEAR = 1998,
         NOTE = {Feature Issue. Twelveth EURO Summer Institute: 
                 Locational Analysis. Guest Editor: J[aime] Barcel{\'o}.}
        )

@UNPUBLISHED(Fliege:97:diss:SIAM1,
             AUTHOR = {J{\"o}rg Fliege},
             TITLE = {Multithreaded {D}imension {R}eduction in {L}ocation {Theory~I}: {G}eneral {R}esults},
             MONTH = {August},
             YEAR = 1997,
             NOTE = {Submitted to {\em SIAM Journal on Optimization}}
            )

@TECHREPORT(FlMa:96,
            AUTHOR = {J{\"o}rg Fliege and Ulrike Maier},
			TITLE = {A {T}wo-Stage {A}pproach for {C}omputing {C}ubature {F}ormulae for the {S}phere},
			INSTITUTION = {Universit{\"a}t Dortmund},
			YEAR = 1995,
			TYPE = {Ergebnisberichte Angewandte Mathematik},
			NUMBER = {139T},
			ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221~Dortmund, Germany},
			MONTH = {September}
		   )

@INPROCEEDINGS(FlMa:97,
               AUTHOR = {J{\"o}rg Fliege and Ulrike Maier},
               TITLE = {Charge {D}istribution of {P}oints on the {S}phere and {C}orresponding Cubature {F}ormulae},
               BOOKTITLE = {Multivariate {A}pproximation ({R}ecent {T}rends and {R}esults},
               YEAR = 1997,
               EDITOR = {Werner Hau{\ss}mann, Kurt Jetter, Manfred Reimer},
               VOLUME = 101,
               SERIES = {Mathematical Research},
               PAGES = {147--160},
               PUBLISHER = {Akademie Verlag (John Wiley Group)},
               ADDRESS = {Berlin}
              )

@TECHREPORT(FlNi:97,
            AUTHOR = {J{\"o}rg Fliege and Stefan Nickel},
            TITLE = {An {I}nterior {P}oint {M}ehod for {M}ultifacility {L}ocation {P}roblems with {F}orbidden {R}egions},
	    INSTITUTION = {Universit{\"a}t Dortmund},
	    YEAR = 1997,
	    TYPE = {Ergebnisberichte Angewandte Mathematik},
	    NUMBER = 142,
	    ADDRESS = {Fachbereich Mathematik, Universit{\"a}t Dortmund, 44221~Dortmund, Germany},
            MONTH = {March},
            NOTE = {Submitted}
            )

@BOOK(Forster:87:1,
      AUTHOR = {Otto Forster},
      TITLE = {Analysis 1: Differential- und Integralrechnung einer Ver{\"a}nderlichen},
      PUBLISHER = VI,
      YEAR = 1987,
      VOLUME = 1,
      SERIES = {Vieweg-Studium: Grundkurs Mathematik},
      ADDRESS = {Braunschweig, Wiesbaden},
      EDITION = {Vierte}
     )

@BOOK(Forster:87:2,
      AUTHOR = {Otto Forster},
      TITLE = {Analysis 2: Differential- und Integralrechnung im R$^n$. Gew{\"o}hnliche Differentialgleichungen},
      PUBLISHER = VI,
      YEAR = 1987,
      VOLUME = 2,
      SERIES = {Vieweg-Studium: Grundkurs Mathematik},
      ADDRESS = {Braunschweig, Wiesbaden},
      EDITION = {F{\"u}nfte}
     )

@ARTICLE(FrCa:72,
         AUTHOR = {R[ichard] L.~Francis and A.~V.~Cabot},
         TITLE = {Properties of a {M}ultifacility {L}ocation {P}roblem {I}nvolving {E}uclidean {D}istances},
         JOURNAL = {Naval {R}esearch {L}ogistics {Q}uarterly},
         YEAR = 1972,
         VOLUME = 19,
         PAGES = {335--353}
        )

@ARTICLE(FrMcWh:83,
         AUTHOR = {Richard L.~Francis and Leon F.~McGinnis and John A.~White},
         TITLE = {Locational {A}nalysis},
         JOURNAL = EJOR,
         YEAR = 1983,
         VOLUME = 12,
         PAGES = {220--252}
        )

@BOOK(FrMi:89,
      AUTHOR = {R[ichard] L.~Francis and P.~Mirchandani},
      TITLE = {Discrete location theory},
      PUBLISHER = {Wiley},
      YEAR = 1989,
      ADDRESS = {New York}
     )

@BOOK(FraWhi:74,
      AUTHOR = {R. L. Francis and J. A. White},
      TITLE = {Facility Layout and Location: An Analytical Approach},
      PUBLISHER = {Prentice Hall},
      YEAR = 1974,
      ADDRESS = {Englewood Cliffs, New Jersey}
     )

@TECHREPORT(FrKL:94,
            AUTHOR = {J.~B.~G. Frenk and M.~J.~Kleijn},
            TITLE = {On {M}iehle«s {A}lgorithm and the {P}erturbed ${\cal\symbol{76}}_p$-distance {M}ultifacility {L}ocation {P}roblem},
            INSTITUTION = {Tinbergen Institute},
            YEAR = 1994,
            TYPE = {discussion paper},
            NUMBER = {TI~94--54},
            ADDRESS = {Tinbergen Institute Rotterdam, Oostmaaslaan~950--952, 3063~DM Rotterdam, The Netherlands}
           )

@TECHREPORT(FrGrZh:94,
            AUTHOR = {J.~B.~G.~Frenk and J.~Gromicho and S.~Zhang},
            TITLE = {Quasiconvex {F}unctions: how to separate, if you must!},
            INSTITUTION = {Tinbergen Institute},
            YEAR = 1994,
            TYPE = {discussion paper},
            NUMBER = {TI~94--59},
            ADDRESS = {Tinbergen Institute Rotterdam, Oostmaaslaan~950--952, 3063~DM Rotterdam, The Netherlands},
            NOTE = {Submitted to \emph{Mathematics of Operations Research}}
           )

@TECHREPORT(FrKl:94:a,
            AUTHOR = {J.~B.~G.~Frenk and M.~J.~Kleijn},
			TITLE = {On {M}iehle's {A}lgorithm and the {P}erturbed 
			         ${\cal\char76}_p$-distance
			         {M}ultifacility {L}ocation {P}roblem},
			INSTITUTION = {Tinbergen Institute},
			ADDRESS = {Tinbergen Institute Rotterdam, Oostmaaslaan 950--952, 
			           3063~DM Rotterdam, The Netherlands},
			YEAR = 1994,
			TYPE = {Discussion paper},
			NUMBER = {TI~94--54}
		   )

@MISC(Frenk:96,
      AUTHOR = {J.~B.~G.~Frenk},
      HOWPUBLISHED = {Course notes on Location Theory},
      YEAR = 1996
     )

@TECHREPORT(FrKl:94:b,
            AUTHOR = {J.~B.~G.~Frenk and M.~J.~Kleijn},
			TITLE = {On a {C}lass of {A}lgorithms solving the {M}ultifacility {L}ocation 
			         {P}roblem with {P}erturbed $L_p$-distances},
			INSTITUTION = {Tinbergen Institute},
			ADDRESS = {Tinbergen Institute Rotterdam, Oostmaaslaan 950--952, 
			           3063~DM Rotterdam, The Netherlands},
			YEAR = 1994,
			TYPE = {Discussion paper},
			NUMBER = {TI~94--74}
		   )

@ARTICLE(FrMeZh:94,
         AUTHOR = {J. B. G. Frenk and M. T. Melo and S. Zhang},
         TITLE = {The {W}eiszfeld method in single facility location},
         JOURNAL = {Investiga\c{c}{\~a}o Operacional},
         YEAR = 1994,
         VOLUME = 14,
		 NUMBER = 1,
		 MONTH = {June},
         PAGES = {35--59}
        )

@ARTICLE(GaGoSt:94,
         AUTHOR = {Walter Gander and Gene H.~Golub and Rolf Strebel},
         TITLE = {Least-squares fitting of circles and ellipses},
         JOURNAL = {BIT},
         VOLUME = 34,
         YEAR = 1994,
         PAGES = {558--578}
        )

@BOOK(Gatrell:83,
      AUTHOR = {Anthony C.~Gatrell},
      TITLE = {Distance and Space},
      PUBLISHER = {Clarendon Press},
      ADDRESS = {Oxford},
      YEAR = 1983,
      SERIES = {Contemporary Problems in Geography}
      )

@ARTICLE(Geoffrion:76,
         AUTHOR = {Arthur M.~Geoffrion},
         TITLE = {The purpose of mathematical programming is insight, not numbers},
         JOURNAL = {Interfaces},
         YEAR = 1976,
         VOLUME = 7,
		 NUMBER = 1,
         PAGES = {81--92},
	 MONTH = {November}
        )

@ARTICLE(Geoffrion:68,
         AUTHOR = {Arthur M. ~Geoffrion},
         TITLE = {Proper {E}fficiency and the {T}heory of {V}ector {M}aximization},
         JOURNAL = JOMAA,
         YEAR = 1968,
         VOLUME = 22,
         PAGES = {618--630}
        )

@TECHREPORT(GeGa:92,
            AUTHOR = {Ferdinand Geue and Tomas Gal},
            TITLE = {Vertex {E}numeration by {M}eans of the {$N$-T}ree {A}lgorithm},
            INSTITUTION = {Fernuniversit{\"a}t Gesamthochschule Hagen},
            YEAR = 1992,
            TYPE = {Diskussionsbeitrag},
            NUMBER = {187},
            ADDRESS = {FernUniversit{\"a}t Gesamthochschule Hagen, 5800 Hagen},
            MONTH = {Mai},
            NOTE  = {Diskussionsbeitrag des Fachbereichs Wirtschaftswissenschaft der Fernuniversit{\"a}t Hagen}
           )

@BOOK(Gibbons:85,
      AUTHOR = {Alan Gibbons},
      TITLE = {Algorithmic graph theory},
      PUBLISHER = {Cambridge University Press},
      YEAR = 1985,
      ADDRESS = {Cambridge, London, New York, New Rochelle, Melbourne, Sidney}
     )

@ARTICLE(GiMu:74,
         AUTHOR = {P.~E.~Gill and W.~Murray},
         TITLE = {Newton-type methods for unconstrained and linearly constrained optimization},
         JOURNAL = {Mathematical Programming},
         YEAR = 1974,
         VOLUME = 7,
         PAGES = {311--350}
        )

@BOOK(GiMuWr:95,
      AUTHOR = {Philip E.~Gill and Walter Murray and Margaret H.~Wright},
      TITLE = {Practical optimization},
      PUBLISHER = {Academic Press Limited, Harcourt Brace and Company},
      YEAR = 1995,
      ADDRESS = {London}
     )

@ARTICLE(Goldengorin:86,
         AUTHOR = {Gol'dengorin},
         TITLE = {Decomposition of the location problem},
         JOURNAL = {Autom. Remote Control},
         YEAR = 1986,
         VOLUME = 47,
         PAGES = {668--677}
        )

@BOOK(GoLo:91,
      AUTHOR = {Gene H.~Golub and Charles F.~van Loan},
      TITLE = {Matrix Computations},
      PUBLISHER = {The Johns Hopkins University Press},
      YEAR = 1991,
      SERIES = {Johns Hopkins Series in the Mathematical Sciences},
      ADDRESS = {Baltimore and London}, 
      EDITION = {second}
     )

@BOOK(GoLo:96,
      AUTHOR = {Gene H.~Golub and Charles F.~van Loan},
      TITLE = {Matrix Computations},
      PUBLISHER = {The Johns Hopkins University Press},
      YEAR = 1996,
      SERIES = {Johns Hopkins Series in the Mathematical Sciences},
      ADDRESS = {Baltimore and London}, 
      EDITION = {third}
     )

@BOOK(Grieb:91,
      AUTHOR = {Wolfgang Grieb},
      TITLE = {Schreibtips f{\"u}r Diplomanden udn Doktorranden},
      PUBLISHER = {vde-Verlag},
      YEAR = 1991,
      ADDRESS = {Berlin, Offenbach},
     )

@TECHREPORT(GrKl:90,
            AUTHOR = {P[eter] Gritzmann and V[ictor] Klee},
            TITLE = {Computational {C}omplexity of {I}nner and {O}uter $j$-{R}adii of {P}olytopes in {F}inite-{D}imensional {N}ormed {S}paces},
            INSTITUTION = {Universit{\"a}t Augsburg},
            YEAR = 1990,
            TYPE = {Report},
            NUMBER = {222},
            ADDRESS = {Institut f{\"u}r Mathematik, Universit{\"a}tsstra{\"s}e 8, D-8900 Augsburg},
			NOTE = {Schwerpunktprogramm der Deutschen Forschungsgemeinschaft ,,Anwendungsbezogene Optimierung und Steuerung''}
           )

@BOOK(GrTe:93,
      AUTHOR = {Christian Gro{\ss}mann and Johannes Terno},
      TITLE = {Numerik der Optimierung},
      PUBLISHER = {Teubner},
      YEAR = 1993,
      SERIES = {Teubner Studienb{\"u}cher: Mathematik},
      ADDRESS = {Stuttgart}
     )

@BOOK(Grunbaum:67,
      AUTHOR = {Branko Gr{\"u}nbaum},
      ED = {R[ichard] Courant and C.~Bers and J.~J.~Stoker},
      TITLE = {Convex polytopes},
      PUBLISHER = {Interscience Publishers, John Wiley {\&} Sons},
      YEAR = 1967,
      VOLUME = {XVI},
      SERIES = {Pure and Applied Mathematics},
      ADDRESS = {London, New York, Sydney}
     )

@ARTICLE(GuGi:91,
         AUTHOR = {Antonio Guccione and William J.~Gillen},
         TITLE = {An economic interpretation of {K}uhn's dual for the {S}teiner-{W}eber problem: a note},
         JOURNAL = {Journal of Regional Science},
         YEAR = 1991,
         VOLUME = 31,
         NUMBER = 1,
         PAGES = {93--95}
        )

@ARTICLE(Gunarwadane:82,
         AUTHOR = {G. Gunarwadane},
         TITLE = {Dynamic versions of set covering type public facility location problems},
         JOURNAL = EJOR,
         YEAR = 1982,
         VOLUME = 24,
         PAGES = {190--195}
        )

@BOOK(Hackenbroch:87,
      AUTHOR = {Wolfgang Hackenbroch},
      TITLE = {Integrationstheorie: eine Einf{\"u}hrung in die Integrationstheorie und ihre Anwendungen},
      PUBLISHER = TE,
      YEAR = 1987,
      SERIES = {Teubner Studienb{\"u}cher: Mathematik},
      ADDRESS = {Stuttgart},
     )

@ARTICLE(Hakimi:83,
         AUTHOR = {S. Louis Hakimi},
         TITLE = {On locating new facilities in a competitive environment},
         JOURNAL = EJOR,
         YEAR = 1983,
         VOLUME = 12,
         PAGES = {29--35}
        )

@TECHREPORT(HaNi:92,
            AUTHOR = {Horst W. Hamacher and Stefan Nickel},
            TITLE = {Restricted planar location problems and applications},
            INSTITUTION = {Universit{\"a}t Kaiserslautern},
            YEAR = 1992,
            TYPE = {Preprint},
            NUMBER = {227},
            ADDRESS = {Fachbereich Mathematik, Erwin-Schr{\"o}dinger-Strasse, D-6750 Kaiserslautern},
            MONTH = {Juli},
	    NOTE = {Submitted to ONR}
           )

@TECHREPORT(HaNi:93,
            AUTHOR = {Horst W. Hamacher and Stefan Nickel},
            TITLE = {Multicriterial planar location problems},
            INSTITUTION = {Universit{\"a}t Kaiserslautern},
            YEAR = 1993,
            TYPE = {Preprint},
            NUMBER = {243},
            ADDRESS = {Fachbereich Mathematik, Erwin-Schr{\"o}dinger-Strasse, D-6750 Kaiserslautern},
            MONTH = {August}
           )

@BOOK(Hamming:62,
      AUTHOR = {Richard W. Hamming},
      TITLE = {Numerical methods for scientists and engineers},
      PUBLISHER = {McGraw-Hill Book Company Inc.},
      YEAR = 1962,
	  SERIES = {International series in pure and applied mathematics},
      ADDRESS = {New York, San Francisco, Toronto, London, Tokyo}
     )

@ARTICLE(HaPeTh:80,
         AUTHOR = {P.~Hansen and J.~Perreur and  J.-F.~Thisse},
         TITLE = {Location {T}heory, {D}ominance, and {C}onvexity: {S}ome {F}urther {R}esults},
         JOURNAL = OR,
         YEAR = 1980,
         VOLUME = 28,
         NUMBER = 5,
         PAGES = {1241--1250},
         MONTH = {September--October}
        )

@MANUAL(Hanson:91,
        TITLE = {MIT Scheme User's Manual},
        AUTHOR = {Chris Hanson},
        ORGANIZATION = {Massachussetts Institute of Technology},
        EDITION = {0.9},
        YEAR = 1991
       )

@BOOK(Harary68,
        AUTHOR = {{Harary}, F. and {Norman}, R.Z. and {Cartwright}, D.},
        TITLE = "Introdution \'a la th\'eorie des graphes orient\'es",
        PUBLISHER = {Dunod},
        YEAR = 1968    
     )
  
@BOOK(Hausdorff:14,
      AUTHOR = {Felix Hausdorff},
      TITLE = {Grundz{\"u}ge der Mengenlehre},
      PUBLISHER = {Chelsea Publishing Company},
      YEAR = 1965,
      ADDRESS = {New York},
      NOTE = {Nachdruck der ersten Ausgabe (Berlin, 1914)}
     )

@BOOK(Hestenes:66,
      AUTHOR = {Magnus R.~Hestenes},
      ED = {I.~S. Sokolnikoff},
      TITLE = {Calculus of variations and optimal control theory},
      PUBLISHER = {John Wiley {\&} Sons},
      YEAR = 1966,
      SERIES = {Applied Mathematics Series},
      ADDRESS = {New York, London, Sydney}
     )

@BOOK(Heuser:86:1,
      AUTHOR = {Harro Heuser},
      ED = {G. K{\"o}the and K.-D. Bierstedt and G. Trautmann},
      TITLE = {Lehrbuch der Analysis},
      PUBLISHER = TE,
      YEAR = 1986,
      VOLUME = 1,
      SERIES = {Mathematische Leitf{\"a}den},
      ADDRESS = {Stuttgart},
      EDITION = {Vierte},
      CROSSREF = {Heuser:86:2},
     )

@BOOK(Heuser:86:2,
      AUTHOR = {Harro Heuser},
      ED = {G. K{\"o}the and K.-D. Bierstedt and G. Trautmann},
      TITLE = {Lehrbuch der Analysis},
      PUBLISHER = TE,
      YEAR = 1986,
      VOLUME = 2,
      SERIES = {Mathematische Leitf{\"a}den},
      ADDRESS = {Stuttgart},
      EDITION = {Zweite}
     )

@BOOK(Heuser:89,
      AUTHOR = {Harro Heuser},
      ED = {G. K{\"o}the and K.-D. Bierstedt and G. Trautmann},
      TITLE = {Gew{\"o}hnliche Differentialgleichungen: Einf{\"u}hrung in Lehre und Gebrauch},
      PUBLISHER = TE,
      YEAR = 1989,
      SERIES = {Mathematische Leitf{\"a}den},
      ADDRESS = {Stuttgart},
     )

@BOOK(Hildenbrand:74,
      AUTHOR = {Werner Hildenbrand},
      TITLE = {Core and Equilibria of a large Economy},
      PUBLISHER = {Princeton University Press},
      YEAR = 1974,
      ADDRESS = {Princeton, New Jersey}
     )

@BOOK(HoUl:90,
      AUTHOR = {John E. Hopcroft and Jeffrey D. Ullman},
      TITLE = {Einf{\"u}hrung in die Automatentheorie, formale Sprachen und Komplexit{\"a}tstheorie},
      PUBLISHER = {Addison Wesley},
      YEAR = 1992,
      ADDRESS = {Bonn, M{\"u}nchen, Reading, Massachussetts and other},
      EDITION = {Zweite}
     )

@ARTICLE(HoWoHo:87,
         AUTHOR = {M.~John Hodgson and Richard T.~Wong and John Honsaker},
         TITLE = {The $p$-centroid problem on an inclined plane},
         JOURNAL = OR,
         YEAR = 1987,
         VOLUME = 35,
         NUMBER = 2,
         PAGES = {221--233},
         MONTH = {March--April}
        )

@article{Huriot86,
        author = {{Huriot}, J. M. and {Thisse}, J. F.},
        title = "Distance in spatial analasis, an axiomatic approach",
        journal = {in: actes du symposium ``Analyse de syst\`emes et mod\'eles math\'ematiques''},
        pages = "223--228",
        year = 1986   }         
    
@INPROCEEDINGS(IdLeMi:89,
               AUTHOR = {H.~Idrissi and O[dile] Lefebvre and C[hristian] Michelot},
               TITLE = {Applications and numerical convergence of the Partial Inverse Method},
               BOOKTITLE = {Optimization --- Fifth French-German Conference},
               YEAR = 1989,
               NUMBER = 1405,
               SERIES = {Lecture Notes in Mathematics},
               PAGES = {39--54},
               PUBLISHER = SP
              )
			  
@INPROCEEDINGS(IdLeMi:89:minisum,
               CROSSREF = {LoLaTh:89},
               AUTHOR = {H.~Idrissi and O[dile] Lefebvre and C[hristian] Michelot},
	       TITLE = {Duality for constrained multifacility location problems with mixed norms and applications},
               PAGES = {71--92},
              )

@ARTICLE(JaBoNaPo:91,
         AUTHOR = {Richard H.~F.~Jackson and Paul T.~Boggs and Stephen G.~Nash and Susan Powell},
         TITLE = {Guidelines for reporting results of computational experiments. Report of the ad hoc comittee},
         JOURNAL = {Mathematical Programming},
         YEAR = 1991,
         VOLUME = 49,
         PAGES = {413--425}
        )

@ARTICLE(JuLo:80,
         AUTHOR = {Henrik Juel and Robert F.~Love},
         TITLE = {Sufficient conditions for {O}ptimal {F}acility {L}ocations to {C}oincide},
         JOURNAL = TS,
         YEAR = 1980,
         VOLUME = 14,
         NUMBER = 2,
         PAGES = {125--129},
         MONTH = {May}
        )

@ARTICLE(JuLo:81,
         AUTHOR = {Henrik Juel and Robert F.~Love},
         TITLE = {On the {D}ual of the {L}inearly {C}onstrained {M}ultifacility {L}ocation {P}roblem with {A}rbitrary {N}orms},
         JOURNAL = TS,
         YEAR = 1981,
         VOLUME = 15,
         NUMBER = 4,
         PAGES = {329--337},
         MONTH = {November}
        )

@ARTICLE(JuLo:76,
         AUTHOR = {H. Juel and R. F. Love},
         TITLE = {An {E}fficient {C}omputational {P}rocedure for {S}olving the  {M}ultifacility {R}ectilinear {F}acilities {L}ocation {P}roblem},
         JOURNAL = {Operation Research Quartely},
         YEAR = 1976,
         VOLUME = 27,
         PAGES = {697--703}
         )

@ARTICLE(JuLo:85,
         AUTHOR = {H. Juel and R. F. Love},
         TITLE = {Then {F}acility {L}ocation {P}roblem with {H}yper-{R}ectilinear {D}istances},
         JOURNAL = {IIE Transactions},
         YEAR = 1985,
         VOLUME = 17,
         PAGES = {94--98}
         )

@TECHREPORT(KaeNi:96,
             AUTHOR = {Stefan Nickel and Barbara K{\"a}fer},
             TITLE = {Error bounds for approximative solution of restricted planar location problems},
             INSTITUTION = {Fachbereich Mathematik, Universit{\"a}t Kaiserslautern},
             YEAR = 1996,
             TYPE = {Report in Wirtschaftsmathematik},
             NUMBER = 17,
             MONTH = {April 30}
            )

@ARTICLE(Karkazis:90,
         AUTHOR = {John Karkazis},
         TITLE = {Facilities location in a competitive environment: {A} {P}romethee based multiple criteria analysis},
         JOURNAL = EJOR,
         YEAR = 1990,
         VOLUME = 49,
         PAGES = {295--304}
         )

@ARTICLE(Katz:74,
         AUTHOR = {I. N. Katz},
         TITLE = {Local convergence in {F}ermats {P}roblem},
         JOURNAL = MAPRO,
         YEAR = 1974,
         VOLUME = 6,
         PAGES = {89--104}
         )

@ARTICLE(KaCo:81,
          AUTHOR = {I.~Norman Katz and Leon Cooper},
          TITLE = {Facility location in the presence of forbidden regions, {I}: {F}ormulation and the case of {E}uclidean distance with one forbidden circle},
          JOURNAL = EJOR,
          YEAR = 1981,
          VOLUME = 6,
          PAGES = {166--173},
         )

@book{Kaufmann68,
        author = {{Kaufmann}, A.},
        title = "M\'ethodes et mod\`eles de la recherche op\'erationelle",
        publisher = {Dunod, tome II},
        year = 1968    }
 
@ARTICLE(Kelley:60,
         AUTHOR = {J.~E.~Kelley},
         TITLE = {The cutting plane methods for solving convex programs},
         JOURNAL = {Journal of the Society of Industrial and Applied Mathematics},
         VOLUME = 8,
         PAGES = {703--712},
         YEAR = 1960
        )

@MISC(Kl:95Passau,
      AUTHOR = {Kathrin Klamroth},
      TITLE = {{P}lanar {L}ocation {P}roblems with {B}arriers},
      HOWPUBLISHED = {Talk held at the Symposium of Operations Research (SOR'95)},
      MONTH = {September},
      YEAR = 1995
     )

@MISC(Kl:95,
      AUTHOR = {Kathrin Klamroth},
      TITLE = {{P}lanar {L}ocation {P}roblems with {L}ine {B}arriers},
      HOWPUBLISHED = {Talk held at the 8th meeting of the European Working Group on Locational Analysis},
      MONTH = {September},
      YEAR = 1995
     )

@MISC(Kl:93,
      AUTHOR = {G{\"u}nther Kl{\"u}tzke},
      HOWPUBLISHED = {Private Communication},
      MONTH = {February~9},
      YEAR = 1993
     )

@BOOK(Kopka:92,
      AUTHOR = {Helmut Kopka},
      TITLE = {\LaTeX: eine Einf{\"u}hrung},
      PUBLISHER = {Addison Wesley},
      YEAR = 1992,
      ADDRESS = {Bonn, M{\"u}nchen, Paris and other},
      EDITION = {Vierte}
     )

@ARTICLE(KoKu:91,
         AUTHOR = {Takeshi Koshizuka and Osamu Kurita},
         TITLE = {Approximate formulas of average distances associated with regions and their applications to location problems},
         JOURNAL = MAPRO,
         YEAR = 1991,
         VOLUME = 52,
         PAGES = {99--123}
        )

@article{Krarup80,
        author = {{Krarup}, J. and {Pruzan}, P. M.},
        title = "The Impact of Distance on Location Problem",
        journal = {European Journal of Operational Research },
        volume = 4,
        pages = "256--269",
        year = 1980     
        }

@ARTICLE(KrMi:40,
         AUTHOR = {M. Krein and D. Milman},
         TITLE = {On extreme points of regularly convex sets},
         JOURNAL = {Studia Mathematica},
         YEAR = 1940,
         VOLUME = 9,
         PAGES = {133--138}
        )

@INCOLLECTION(Kuhn:67,
              AUTHOR = {H. W. Kuhn},
              TITLE = {On a pair of dual nonlinear programs},
              BOOKTITLE = {Nonlinear programming},
              PUBLISHER = {North-Holland Publishing Co.},
              YEAR = 1967,
              EDITOR = {J[ohn] Abadie},
              ADDRESS = {Amsterdam},
              PAGES = {37--54}
             )

@ARTICLE(KuKu:62,
         AUTHOR = {Kuhn and Kuenne},
         TITLE = {Algorithm for the Weber problem},
         JOURNAL = {Journal of Regional Science},
         YEAR = 1962,
         VOLUME = 4,
         PAGES = {21--33}
        )

@ARTICLE(Labbe:85,
         AUTHOR = {Martine Labb{\'e}},
         TITLE = {Outcomes of voting and planning in single facility location problems},
         JOURNAL = EJOR,
         YEAR = 1985,
         VOLUME = 20,
         PAGES = {299--313}
        )

@BOOK(Lang:71,
      AUTHOR = {Serge Lang},
      TITLE = {Linear Algebra},
      PUBLISHER = {Addison-Wesley Publishing Company},
      YEAR = 1971,
      ADDRESS = {Reading, Massachusetts, Menlo Park, California, London, Sydney, Manila},
      EDITION = {Zweite}
     )

@ARTICLE(LaSa:83,
         AUTHOR = {Richard C.~Larson and Ghazala Sadiq},
         TITLE = {Facility {L}ocation with the {M}anhattan {M}etric in the {P}resence of {B}arriers to {T}ravel},
         JOURNAL = OR,
         YEAR = 1983,
         VOLUME = 31,
         NUMBER = 4,
         MONTH = {July--August}
        )

@ARTICLE(LeMiPl:90,
         AUTHOR ={O[dile] Lefebvre and C[hristian] Michelot and F[rank] Plastria},
         TITLE = {Geometric {I}nterpretation of the {O}ptimality {C}onditions in {M}ultifacility {L}ocation and {A}pplications},
         JOURNAL = JOTA,
         YEAR = 1990,
         VOLUME = 65,
         NUMBER = 1,
         PAGES = {85--101},
         MONTH = {April}
        )

@ARTICLE(LeMiPl:91:errata,
         AUTHOR ={O[dile] Lefebvre and C[hristian] Michelot and F[rank] Plastria},
         TITLE = {ERRATA CORRIGE {G}eometric {I}nterpretation of the {O}ptimality {C}onditions in {M}ultifacility {L}ocation and {A}pplications},
         JOURNAL = JOTA,
         YEAR = 1991,
         VOLUME = 68,
         NUMBER = 2,
         PAGES = {393--394},
         MONTH = {February},
        )

@ARTICLE(LeMiPl:91:koinz,
         AUTHOR ={O[dile] Lefebvre and C[hristian] Michelot and F[rank] Plastria},
         TITLE = {Sufficient conditions for coincidence in minisum multifacility location problems with a general metric},
         JOURNAL = OR,
         YEAR = 1991,
         VOLUME = 39,
         NUMBER = 3,
         PAGES = {437--442},
         MONTH = {May--June}
        )
		
@INPROCEEDINGS(LeMiPl:92:blp,
               AUTHOR ={O[dile] Lefebvre and C[hristian] Michelot and F[rank] Plastria},
               TITLE = {Boolean linear programming formulation of the attraction tree detection problem},
               BOOKTITLE = {Proceedings of the {VI}th meeting of the {EURO} working group on locational analysis},
               PAGES = {123--134},
               YEAR = 1992,
               EDITOR = {Jos{\'e} A. Moreno P{\'e}rez},
               ADDRESS = {Puerto de La Cruz (Tenerife), Spain},
               MONTH = {October}
              )

@TECHREPORT(Leineweber:96,
            AUTHOR = {Daniel B.~Leineweber},
            TITLE = {Analyse und {R}estrukturierung eines {V}erfahrens zur direkten {L}{\"o}sung von {O}ptimal-{S}teuerungsproblemen ({T}he {T}heory of {MUSCOD} in a {N}utshell)},
            INSTITUTION = {Interdisziplin{\"a}res Zentrum f{\"u}r Wissenschaftliches Rechnen der Universit{\"a}t Heidelberg},
            YEAR = 1996,
            TYPE = {Preprint},
            NUMBER = {96 -- 19},
            ADDRESS = {Heidelberg},
            MONTH = {April},
            NOTE = {{D}iplomarbeit}
           )

@ARTICLE(Love:69,
         AUTHOR = {R.~F.~Love},
         TITLE = {Locating facilities in three-dimensional space by convex programming},
         JOURNAL = {Naval Research Logistics quartely},
         YEAR = 1969,
         VOLUME = 16,
         PAGES = {503--516}
        )

@article{love72,
        author = {{Love}, R. F. and {Morris}, J. G.},
        title = "Modelling inter-city road distances by mathematical function",
        journal = {Operational Research Quarterly},
        volume = 23,
        pages = "61--71",
        year = 1972     }  
  
@ARTICLE(LoMo:75,
         AUTHOR = {Robert F. Love and James G. Morris},
         TITLE = {Solving {C}onstrained {M}ulti-{F}acility {L}ocation {P}roblems {I}nvolving {$\ell_p$} {D}istances {U}sing {C}onvex {P}rogramming},
         JOURNAL = {Operations Research},
         YEAR = 1975,
         VOLUME = 23,
         NUMBER = 3,
         PAGES = {581--587},
         MONTH = {May--June}
        )
			  
@article{love79,
        author = {{Love}, R. F. and {Morris}, J. G.},
        title = "A new norm for measuring distance which yields linear location problems",
        journal = {Management Science},
        volume = 25,
        pages = "130--139",
        year = 1979     }   
 
@article{love88,
        author = {{Love}, R. F. and {Morris}, J. G.},
        title = "On estimating road distances by mathematical functions",
        journal = {European Journal of Operational Research },
        volume = 36,
        pages = "251--253",
        year = 1988    }  
  
@BOOK(LoMoWe:88,
      AUTHOR = {Robert F.~Love and James G.~Morris and George O.~Wesolowsky},
      TITLE = {Facilities location: {M}odels and methods},
      PUBLISHER = {North Holland},
      YEAR = 1988,
      NUMBER = 7,
      SERIES = {Publications in Operation Research Series},
      ADDRESS = {Amsterdam etc.}
     )

@Article{LaW94,
  author =   "R. F. Love and John H. Walker",
  title =    "An empirical comparison of block nad round
                  norms for modelling actual distances",
  journal =  "Location Science",
  year =     1994,
  volume =   2,
  pages =    "21-43"
}
@BOOK(Marti:77,
      AUTHOR = {J{\"u}rg T. Marti},
      TITLE = {Konvexe Analysis},
      PUBLISHER = {Birkh{\"a}user Verlag},
      YEAR = 1977,
      VOLUME = 54,
      SERIES = {Mathematische Reihe, Lehrb{\"u}cher und Monographien aus dem Gebiet der exakten Wissenschaften},
      ADDRESS = {Basel und Stuttgart},
      EDITION = {erste}
     )

@INCOLLECTION(MaWi:71,
              AUTHOR = {R.~S.~Martin and J.~H.~Wilkinson},
              TITLE = {Symmetric {D}ecomposition of {P}ositive {D}efinite {B}and {M}atrices},
              BOOKTITLE = {Linear {A}lgebra},
              PUBLISHER = {Springer-Verlag},
              YEAR = 1971,
              EDITOR = {J.~H.~Wilkinson and C.~Reinsch},
              NUMBER = 186,
              TYPE = {{H}andbook for {A}utomatic {C}omputation},
              SERIES = {Die {G}rundlehren der mathematischen {W}issenschaften},
              CHAPTER = {I/4},
              PAGES = {50--56},
              ADDRESS = {Berlin, Heidelberg, New York},
              NOTE = {Also published in {\em Numerische Mathematik}, {\bf 7}, 355--361 (1965)},
              CROSSREF = {WiRe:71}
             )

@BOOK(Mayer:89,
      AUTHOR = {Karl Heinz Mayer},
      TITLE = {Algebraische Topologie},
      PUBLISHER = {Birkh{\"a}user},
      YEAR = 1989,
      ADDRESS = {Basel, Boston, Berlin}
     )

@ARTICLE(McWe:76,
         AUTHOR = {Richard D. McKelvey and Richard E. Wendell},
         TITLE = {Voting equilibria in multidimensional choice spaces},
         JOURNAL = {Mathematics of Operations Research},
         YEAR = 1976,
         VOLUME = 1,
         NUMBER = 2,
         PAGES = {144--158},
         MONTH = {Mai}
        )

@ARTICLE(Megiddo:83,
         AUTHOR = {N[imrod] Megiddo},
         TITLE = {The weighted {E}uclidean 1-center problem},
         JOURNAL = {Mathematics of Operation Research},
         YEAR = 1983,
         VOLUME = 8,
         PAGES = {498--504}
        )

@BOOK(Meyberg:80,
      AUTHOR = {Kurt Meyberg},
      ED = {J. Heinhold},
      TITLE = {Algebra},
      PUBLISHER = {Hanser},
      YEAR = 1980,
      SERIES = {Mathematische Grundlagen f{\"u}r Mathematiker, Physiker und Ingenieure},
      ADDRESS = {M{\"u}nchen, Wien}
     )

@ARTICLE(Michelot:87,
         AUTHOR = {Christian Michelot},
         TITLE = {Localization in multifacility location theory},
         JOURNAL = EJOR,
         YEAR = 1987,
         VOLUME = 31,
         PAGES = {177--184}
        )

@article{Michelot93,
         author = {{Michelot}, C.},
         title = "The Mathematics of continuous location ",
         journal = {Special Isolde of Studies in Locational Analysis, J. Karkasis \& B. Boffey (Eds)},
         volume = 5,
         page = "59--83",
         year = 1993    }

@MISC(Michelot:95,
      AUTHOR = {Christian Michelot},
      HOWPUBLISHED = {Private communication},
      MONTH = {September~26},
      YEAR = 1995,
      NOTE = {Lambrecht, EWGLA8 --- EURO Working Group on Locational Analysis}
     )

@ARTICLE(MiLe:87,
         AUTHOR ={C[hristian] Michelot and O[dile] Lefebvre},
         TITLE = {A primal-dual algorithm for the {F}ermat-{W}eber problem involving mixed gauges},
         JOURNAL = MAPRO,
         YEAR = 1987,
         VOLUME = 39,
         PAGES = {319--335}
        )

@UNPUBLISHED(MiPl:91?,
             AUTHOR ={C[hristian] Michelot and F[rank] Plastria},
             TITLE = {Attraction {T}ree {D}etection is {NP}-{C}omplete},
             NOTE = {Rapport du CERMSEM 9107, Universit{\'e} de Paris I --- Panth{\'e}on-Sorbonne}
            )

@BOOK(Minkowski:11,
      AUTHOR = {Hermann Minkowski},
      TITLE = {Gesammelte Abhandlungen},
      PUBLISHER = {Chelsea Publishing Company},
      YEAR = 1967,
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      NOTE = {Reprint}
     )

@MANUAL(MIT:89,
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        ORGANIZATION = {Massachussetts Institute of Technology},
        YEAR = 1991
       )

@ARTICLE(MiPa:91,
         AUTHOR = {Joseph S.~B.~Mitchell and Christos H.~Papadimitriou},
         TITLE = {The {W}eighted {R}egion Problem: {F}inding {S}hortest {P}aths {T}hrough a {W}eighted {P}lanar {S}ubdivision},
         JOURNAL = {Journal of the Association for Computing Machinery},
         YEAR = 1991,
         VOLUME = 38,
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         MONTH = {January},
         PAGES = {18--73}
        )

@BOOK(Minoux:86,
      AUTHOR = {M. Minoux},
      TITLE = {Mathematical Programming --- Theory and Algorithms},
      PUBLISHER = {John Wiley and Sons},
      YEAR = 1986,
      ADDRESS = {Chichester, New York, Brisbane, Toronto, Singapore}
     )

@BOOK(MiFr:91,
      EDITOR = {Pitu B. Mirchandani and Richard L. Francis},
      TITLE = {Discrete {L}ocation {T}heory},
      YEAR = {1990},
      PUBLISHER = {John Wiley \& Sons, Inc.},
      ADDRESS = {New York},
     )

@TECHREPORT(MoTh:92:preprint,
            AUTHOR = {Jorge J.~Mor{\'e} and David J.~Thuente},
            TITLE = {Line search algorithms with guaranteed sufficient decrease},
            INSTITUTION = {Argonne National Laboratory, Mathematics and Computer Science Division},
            YEAR = 1992,
            TYPE = {Preprint},
            NUMBER = {MCS-P330-1092},
            ADDRESS = {9700 South Cass Avenue, Argonne, Illinois 60439, USA},
            MONTH = {October},
            NOTE = {Electronically distributed as 
               {\verb!info.mcs.anl.gov/pub/tech_reports/reports/P330.dvi.tar.Z!}
               and {\verb!info.mcs.anl.gov/pub/tech_reports/reports/P330.ps.Z!}}
           )

@ARTICLE(MoTh:92,
            AUTHOR = {Jorge J.~Mor{\'e} and David J.~Thuente},
            TITLE = {Line search algorithms with guaranteed sufficient decrease},
            JOURNAL = {ACM Transactions on Mathematical Software},
            YEAR = 1994,
            VOLUME = 20,
            NUMBER = 3,
            MONTH = {September},
            PAGES = {286--307},
            NOTE = {Also available as~\cite{MoTh:92:preprint}}
           )

@ARTICLE(MoNo:83,
         AUTHOR = {James G. Morris and John P. Norback},
         TITLE = {Linear facility location --- {S}olving extensions of the basic problem},
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         YEAR = 1983,
         VOLUME = 12,
         PAGES = {90--94}
        )

@ARTICLE(MoVe:79,
         AUTHOR = {J. G. Morris and W. A. Verdini},
         TITLE = {Minisum $l_p$-distance location problems solved via a perturbed problem and {W}eizsfeld's algorithm},
         JOURNAL = OR,
         YEAR = 1979,
         VOLUME = 27,
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        )

@ARTICLE(Moses:58,
         AUTHOR = {L.~N.~Moses},
         TITLE = {Location and the Theory of Production},
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@BOOK(Mueller:83,
      AUTHOR = {Robert M{\"u}ller},
      TITLE = {Mathematik verst{\"a}ndlich},
      PUBLISHER = {C. A. Koch's Verlag Nachf.},
      YEAR = 1983,
      ADDRESS = {Berlin, Darmstadt, Wien},
      NOTE = {Lizenzausgabe mit Genehmigung des Falken-Verlages, Niedernhausen/Ts.}
     )

@TECHREPORT(MuOv:78,
            AUTHOR = {Walter Murray and Michael L. Overton},
	    TITLE = {Steplength algorithms for minimizing a class of nondifferentiable functions},
	    INSTITUTION = {Stanford University},
	    YEAR = 1978,
            NUMBER = {STAN-CS-78-679},
            ADDRESS = {Computer Science Department, School of Humanities and Sciences},
            MONTH = {November}
		   )

@ARTICLE(Naccache:78,
         AUTHOR = {P. H. Naccache},
         TITLE = {{C}onnectedness of the {S}et of {N}ondominated {O}utcomes in {M}ulticriteria {O}ptimization},
         JOURNAL = JOTA,
         YEAR = 1978,
         VOLUME = 25,
         NUMBER = 3,
         PAGES = {459--467},
         MONTH = {Juli}
        )

@ARTICLE(Nash:84,
         AUTHOR = {Stephen G.~Nash},
         TITLE = {Newton-type minimization via the {L}anczos method},
         JOURNAL = {SIAM JOurnal on Numerical Analysis},
         YEAR = 1984,
         VOLUME = 21,
         NUMBER = 4,
         PAGES = {770--778},
         MONTH = {August}
        )

@TECHREPORT(Nickel:93,
            AUTHOR = {Stefan Nickel},
            TITLE = {Bicriterial and restricted planar 2-Median problems},
            INSTITUTION = {Universit{\"a}t Kaiserslautern},
            YEAR = 1993,
            TYPE = {Preprint},
            NUMBER = {242},
            ADDRESS = {Fachbereich Mathematik, Erwin-Schr{\"o}dinger-Strasse, D-6750 Kaiserslautern},
            MONTH = {November}
           )

@INPROCEEDINGS(Nocedal:90,
               AUTHOR = {Jorge Nocedal},
               TITLE = {The Performance of Several Algorithms for Large Scale Unconstrained Optimization},
               BOOKTITLE = {Large-Scale Numerical Optimization},
               YEAR = 1990,
               EDITOR = {Thomas F.~Coleman and Yuying Li},
               SERIES = {SIAM Proceedings Series},
               PAGES = {138--151},
               PUBLISHER = {SIAM Society for Industrial and Applied Mathematics},
               ADDRESS = {Philadelphia, Pennsylvania}
              )

@ARTICLE(Ostresh:77,
         AUTHOR = {Lawrence M. {Ostresh~Jr.}},
         TITLE = {The multifacility location problem: {A}pplications and descent theorems},
         JOURNAL = {Journal of Regional Science},
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         PAGES = {409--419}
        )

@ARTICLE(Ostresh:78,
         AUTHOR = {L. M. Ostresh},
         TITLE = {On the convergence of a class of iterative methods for solving the {W}eber location problem},
         JOURNAL = OR,
         YEAR = 1978,
         VOLUME = 26,
         PAGES = {597--609}
        )

@ARTICLE(Overton:83,
         AUTHOR = {Michael L.~Overton},
         TITLE = {A quadratically convergent method for minimizing a sum of euclidean norms},
         JOURNAL = MAPRO,
         YEAR = 1983,
         VOLUME = 27,
         PAGES = {34--63}
        )

@MANUAL(pcmanual,
        TITLE = {SPARCompiler Pascal~3.0 Reference Manual},
        ORGANIZATION = {Sun Microsystems Inc.},
        ADDRESS = {Mountain View, California},
        MONTH = {July},
        YEAR = 1992
       )

@ARTICLE(Pelegrin:84,
         AUTHOR = {Blas Pelegrin},
         TITLE = {A general approach for the 1-center problem},
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         VOLUME = 28,
         PAGES = {293--301}
        )

@Article{PaT74,
  author =   "J. Perreur and J. F. Thisse",
  title =    "Central metrics and optimal location",
  journal =  "Journal of Reginal Science",
  year =     1974,
  volume =   14,
  pages =    "411-421"
}
@CONFERENCE(PeMa:96,
            AUTHOR = {Giancarlo Pesamosca and Francesco Mazzarella},
            TITLE = {The analytical solution of some {EMFL} minisum problems},
            YEAR = 1996,
            ADDRESS = {Edmonton and Jasper, Canada},
            MONTH = {June~26 -- July~3},
            NOTE = {Talk held at the Seventh International Symposium on Locational Decisions, ISOLDE VII}
           )

@PROCEEDINGS(PhTh:83,
             TITLE = {Symposium on Spatial Competition and the Theory of Differentiated Markets},
             YEAR = {1982--1983},
             EDITOR = {Louis Philip and Jacques-Fran\c{c}ois Thisse},
             VOLUME = {XXXI},
             ORGANIZATION = {The Journal of Industrial Economics},
             MONTH = {September/December}
             )
   
@BOOK(Pfanzagl:88,
      AUTHOR = {Johann Pfanzagl},
      TITLE = {Elementare Wahrscheinlichkeitsrechnung},
      PUBLISHER = {de Gruyter},
      YEAR = 1988,
      SERIES = {de-Gruyter-Lehrbuch},
      ADDRESS = {Berlin, New York}
     )

@ARTICLE(PiRa:78,
         AUTHOR = {Jean-Claude Picard and H.~Donald Ratliff},
         TITLE = {A {C}ut {A}pproach to the {R}ectilinear {D}istance {F}acility {L}ocation {P}roblem},
         JOURNAL = OR,
         YEAR = 1978,
         VOLUME = 26,
         NUMBER = 3,
         PAGES = {422--433},
         MONTH = {May--June}
        )

@ARTICLE(PlHu:75,
         AUTHOR = {A. Planchart and A. P. Hurter},
         TITLE = {An efficient algorithm for the solution of the {W}eber problem with mixed norms},
         JOURNAL = {SIAM Journal on Control},
         YEAR = 1975,
         VOLUME = 13,
         PAGES = {650--665}
        )

@TECHREPORT(Plastria:85,
            AUTHOR ={F[rank] Plastria},
            TITLE = {Subdifferentials and exact optimality criteria for multifacility location problems},
            INSTITUTION = {Universite de Dijon, Laboratoire Analyse Num{\'e}rique},
            YEAR = 1985,
            TYPE = {Working paper},
            MONTH = {September}
           )

@ARTICLE(Plastria:87,
         AUTHOR ={F[rank] Plastria},
         TITLE = {Solving general continuous single facility location problems by cutting planes},
         JOURNAL = EJOR,
         YEAR = 1987,
         VOLUME = 29,
         PAGES = {98--110}
        )

@TECHREPORT(Plastria:90,
            AUTHOR ={F[rank] Plastria},
            TITLE = {On destination optimality in asymmetric distance {F}ermat-{W}eber problems},
            INSTITUTION = {Vrije Universiteit Brussel},
            YEAR = 1990,
            TYPE = {Working paper},
            NUMBER = {BEIF/25},
            ADDRESS = {Brussels, Belgium}
           )

@ARTICLE(Plastria:91:rep,
         AUTHOR = {Frank Plastria},
         TITLE = {The effects of majority in {F}ermat-{W}eber problems with attraction and repulsion in a pseudometric space},
         JOURNAL = {Yugoslav Journal of Operations Research},
         YEAR = 1991,
         VOLUME = 1,
         NUMBER = 2,
         PAGES = {141--146}
        )

@TECHREPORT(Plastria:91o,
            AUTHOR ={F[rank] Plastria},
            TITLE = {When Facilities coincide: exact optimality conditions in multifacility location},
            INSTITUTION = {Centre for Industrial Location and Development, Centre for Management Informatics, Vrije Universiteit Brussel},
            YEAR = 1991,
            TYPE = {Report},
            NUMBER = {BEIF/6 (Version 2)},
            MONTH = {M{\"a}rz},
	    NOTE = {Published as~\cite{Plastria:92:exact}}
           )

@ARTICLE(Plastria:92:exact,
         AUTHOR ={F[rank] Plastria},
         TITLE = {When {F}acilities {C}oincide: {E}xact {O}ptimality {C}onditions in {M}ultifacility {L}ocation},
         JOURNAL = JOMAA,
         YEAR = 1992,
         VOLUME = 169,
		 NUMBER = 2,
         PAGES = {476--498},
		 MONTH = {September}
        )

@INPROCEEDINGS(Plastria:92:maj,
               AUTHOR = {Frank Plastria},
               TITLE = {A majority theorem for {F}ermat-{W}eber problems in quasimetric spaces with applications to semidirected networks},
               BOOKTITLE = {Proceedings of the {VI}th meeting of the {EURO} working group on locational analysis},
               YEAR = 1992,
               NUMBER = 5,
               SERIES = {Serie Informes},
               ADDRESS = {Secretariado de Publicaciones, Puerto de La Cruz (Tenerife), Spain},
               MONTH = {April},
               PAGES = {153--165}
              )

@MISC(Plastria:93,
      AUTHOR = {Frank Plastria},
      HOWPUBLISHED = {Private communication},
      MONTH = {May~7},
      YEAR = 1993
     )

@INPROCEEDINGS(Plastria:93:report,
               AUTHOR = {Frank Plastria},
               TITLE = {Continuous location anno 1992: a progress report},
               BOOKTITLE = {ISOLDE VI SURVEY PAPERS},
               YEAR = 1993,
               EDITOR = {Brian Boffey and John Karkazis},
               NUMBER = 5,
               SERIES = {Studies in Locational Analysis},
               PAGES = {85--127},
               MONTH = {Juni},
               NOTE = {Republished as~\cite{Plastria:95a}}
              )

@article{Plastria93:assym,
        author = {{Plastria},  F.},
        title = "On destination optimality in assymetric distance Fermat-Weber problem",
        journal = {Annnals of Operations Research},
        volume = 25,
        pages = "{ }",
        year = 1993   } 

@MISC(Plastria:94,
      AUTHOR = {Frank Plastria},
      HOWPUBLISHED = {Written communication},
      MONTH = {Mai~17},
      YEAR = 1995
     )

@INCOLLECTION(Plastria:95a,
              AUTHOR = {Frank Plastria},
              TITLE = {{C}ontinuous {L}ocation {P}roblems},
              BOOKTITLE = {Facility {L}ocation: {A} {S}urvey of {A}pplications and {M}ethods},
              PUBLISHER = {Springer Verlag},
              YEAR = 1995,
              EDITOR = {Zvi Drezner},
              SERIES = {Springer {S}eries in {O}perations {R}esearch},   
              CHAPTER = {11},
              PAGES = {225--262},
              CROSSREF = {Drezner:95},
       )

@MISC(Plastria:95,
      AUTHOR = {Frank Plastria},
      HOWPUBLISHED = {Private communication},
      MONTH = {June~26},
      YEAR = 1995,
      NOTE = {La Laguna, Twelfth EURO Summer Institute on Locational Analysis}
     )

@UNPUBLISHED(Plastria:97,
             AUTHOR = {Frank Plastria},
             TITLE = {Asymmetric distances, semidirected networks and majority in {F}ermat-{W}eber problems},
             MONTH = {March},
             YEAR = 1997,
             NOTE = {In preparation}
            )

@TECHREPORT(PuRo:95,
            AUTHOR = {Justo Puerto and Antonio M. Rodr{\'\i}guez-Ch{\'\i}a},
            TITLE = {A {D}ynamic {A}pproach to {W}eber {P}roblem},
            INSTITUTION = {Facultad de {M}atem{\'a}ticas de la {U}niversidad de {S}evilla, {S}ecc{\'\i}on {E}stad{\'\i}stica e {I}nvestigaci{\'o}n {O}perativa},
            YEAR = 1995,
            TYPE = {Prepublicaci{\'o}n},
            NUMBER = 15
           )

@ARTICLE(Rado:88,
         AUTHOR = {Francois Rad{\'o}},
         TITLE = {The {E}uclidean multifacility location problem},
         JOURNAL = OR,
         YEAR = 1988,
         VOLUME = 36,
         PAGES = {485--492}
        )

@BOOK(Reimer:80,
      AUTHOR = {Manfred Reimer},
      ED = {Kurt Endl},
      TITLE = {Grundlagen der Numerischen Mathematik},
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      SERIES = {Studien-Texte: Mathematik},
      ADDRESS = {Wiesbaden}
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@ARTICLE(Ribeiro:43,
         AUTHOR = {Hugo Ribeiro},
         TITLE = {Sur les espaces {\`a} m{\'e}trique faible},
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         NUMBER = 1,
         PAGES = {21--40},
         MONTH = {Mar{\c{c}}o}
        )

@PHDTHESIS(Richter:78,
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           TITLE = {A game-theoretic approach to location-allocation conflicts},
           SCHOOL = {Universit{\"a}t (TH) Karlsruhe},
           YEAR = 1978,
           MONTH = {September},
           NOTE = {Habilitationsschrift}
          ) 

@BOOK(Rockafellar:70,
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      ED = {Manton Morse and A. W. Tucker},
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      ADDRESS = {Princeton, New Jersey}
     )

@TECHREPORT(RoKu:91,
            AUTHOR = {Wilhelm R{\"o}dder and Friedhelm Kulmann},
            TITLE = {Propagation in {A}rbitrary {N}etworks},
            INSTITUTION = {Fernuniversit{\"a}t Gesamthochschule Hagen},
            YEAR = 1991,
            TYPE = {Diskussionsbeitrag},
            NUMBER = {178},
            ADDRESS = {FernUniversit{\"a}t Hagen, Feithstr. 140 / AVZ II, 5800 Hagen},
            NOTE  = {Diskussionsbeitrag des Fachbereichs Wirtschaftswissenschaft der Fernuniversit{\"a}t Hagen}
           )

@MISC(RoCaCo:96,
      AUTHOR = {Dolores Romero-Morales and E[milio] Carrizosa and E.~Conde},
      TITLE = {Semi-obnoxious {L}ocation {M}odels: {A} {G}lobal {O}ptimization {A}pproach},
      HOWPUBLISHED = {Talk held at the 9th meeting of the European Working Group On Locational Analysis},
      MONTH = {September},
      YEAR = 1996
     )

@ARTICLE(RoSc:75,
         AUTHOR = {G. M. Roodman and L. B. Schwarz},
         TITLE = {Optimal and {H}euristic {F}acility {P}haseout {S}trategies},
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        )

@ARTICLE(RoXu:92,
         AUTHOR = {J.~B.~Rosen and G.~L.~Xue},
         TITLE = {On the convergence of {M}iehle's algorithm for the {E}uclidean multifacility location problem},
         JOURNAL = OR,
         YEAR = 1992,
         VOLUME = 40,
         PAGES = {188--191}
        )

@BOOK(Schnorr:74,
      AUTHOR = {Claus Peter Schnorr},
      ED = {H. G{\"o}rtler},
      TITLE = {Rekursive Funktionen und ihre Komplexit{\"a}t},
      PUBLISHER = TE,
      YEAR = 1974,
      VOLUME = 24,
      SERIES = {Teubner Studienb{\"u}cher Informatik},
      ADDRESS = {Stuttgart}
     )

@BOOK(Schwarz:93,
      AUTHOR = {Rolf Schwarz},
      TITLE = {Convex {B}odies: the {B}runn-{M}inkowski theory},
      PUBLISHER = {Cambridge University Press},
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	  VOLUME = 44,
      SERIES = {Encyclopedia of Mathematics and its applications},
      ADDRESS = {Cambridge}
     )		   

@TECHREPORT(ShAl:96,
            AUTHOR = {Hanif D.~Sherali and Intesar Al-Loughani},
            TITLE = {Equivalent {P}rimal and {D}ual {D}ifferentiable {R}eformulations of the {E}uclidean {M}ultifacility {L}ocation {P}roblem},
            INSTITUTION = {Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University},
            YEAR = 1996,
            TYPE = {Report},
            NUMBER = {HDS96-7},
            MONTH = {June},
            ADDRESS = {Blacksburg, Virginia 24061-0118, USA}
           )

@Book{Shreid74,
  author =   "Yu. A. Shreider",
  title =    "What is distance?",
  publisher =    "The University of Chicago Press",
  ADDRESS = {Chicago \& London},
  year =     1974
}

@ARTICLE(Spaeth:97a,
         AUTHOR = {Helmuth Sp{\"a}th},
         TITLE = {{L}east-{S}quares {F}itting of {E}llipses and {H}yperbolas},
         JOURNAL = {Computational Statistics},
         YEAR = 1997,
         VOLUME = 12,
         NUMBER = 3,
         PAGES = {329--341}
        )

@ARTICLE(Spaeth:97b,
         AUTHOR = {Helmuth Sp{\"a}th},
         TITLE = {{O}rthogonal {D}istance {F}itting by {C}ircles and {E}llipses with {G}iven {[sic!]} {A}rea},
         JOURNAL = {Computational Statistics},
         YEAR = 1997,
         VOLUME = 12,
         NUMBER = 3,
         PAGES = {343--354}
        )

@ARTICLE(Spingarn:85,
         AUTHOR = {Jonathan E. Spingarn},
         TITLE = {A primal-dual projection method for solving systems of linear inequalities},
         JOURNAL = {Linear Algebra and its Applications},
         YEAR = 1985,
         VOLUME = 65,
         PAGES = {45--62}
        )

@ARTICLE(Spingarn:83,
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         TITLE = {Partial {I}nverse of a {M}onotone {O}perator},
         JOURNAL = {Applied Mathematics and Optimization},
         YEAR = 1983,
         VOLUME = 10,
         PAGES = {247--265}
        )

@BOOK(Spivak:67,
      AUTHOR = {Michael Spivak},
      TITLE = {Calculus},
      PUBLISHER = {W. A. Benjamin, Inc.},
      YEAR = 1967,
      ADDRESS = {New York, New York 10016}
     )

@PHDTHESIS(Steinbach:95,
           AUTHOR = {M[arc] C.~Steinbach},
           TITLE = {Fast {R}ecursive {SQP} {M}ethods for {L}arge-{S}cale {O}ptimal {C}ontrol {P}roblems},
           SCHOOL = {Universit{\"at} Heidelberg},
           YEAR = 1995,
           MONTH = {Juni},
           NOTE = {Ph.~D.~Dissertation}
          )

@BOOK(StWi:70,
      AUTHOR = {Josef Stoer and Christoph Witzgall},
      TITLE = {Convexity and Optimization in Finite Dimensions I},
      PUBLISHER = {Springer-Verlag},
      YEAR = 1970,
      VOLUME = 163,
      SERIES = {Die Grundlagen der mathematischen Wissenschaften},
      ADDRESS = {Berlin, Heidelberg, New York}
     )

@article{Stone91,
        author = {{Stone},  R. E.},
        title = "A new distance function for modeling travel distances in a transportation network",
        journal = {Transportation science},
        volume = 25,
        pages = "83--91",
        year = 1991   } 

@ARTICLE(SuAsOk:91,
         AUTHOR = {Tsutomu Suzuki and Yasushi Asami and Atsuyuki Okabe},
         TITLE = {Sequential location-allocation of public facilities in one- and two-dimensional space: {C}omparison of several policies},
         JOURNAL = MAPRO,
         YEAR = 1991,
         VOLUME = 52,
         PAGES = {125--146}
        )

@ARTICLE(TaCh:90,
         AUTHOR = {A. Tamir and P. Chandrasekharan},
         TITLE = {Algebraic optimization: the {F}ermat-{W}eber location {P}roblem},
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         YEAR = 1990,
         VOLUME = 46,
         PAGES = {219--224}
        )

@ARTICLE(TchRoCh:88,
         AUTHOR = {Dong-Wan Tcha and Hyung-Bong Ro and Chun-Beon},
         TITLE = {A dual based add heuristic for uncapacitated facility location},
         JOURNAL = JORS,
         YEAR = 1988,
         VOLUME = 39,
         PAGES = {873--878}
        )

@ARTICLE(TePo:89,
         AUTHOR = {Luc-Normand Tellier and Boris Polanski},
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         JOURNAL = {Journal of Regional Science},
         YEAR = 1989,
         VOLUME = 29,
		 NUMBER = 3,
         PAGES = {387--405}
        )

@ARTICLE(ThWaWe:84,
         AUTHOR = {J.-F. Thisse and J[ames] E. Ward and R[ichard] E. Wendell},
         TITLE = {Some {P}roperties of {L}ocation {P}roblems with {B}lock and {R}ound {N}orms},
         JOURNAL = OR,
         YEAR = 1984,
         VOLUME = 32,
         NUMBER = 6,
         PAGES = {1309--1327},
         MONTH = {November--Dezember}
        )

@book{Thisse83,
        author = {{Thisse}, J. F. and {Zoller}, H. G.},
        title = "Locational Analisis of Public Facilities",
        publisher = {North Hollland Publishing Co.},
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        year = 1983   }

@ARTICLE(VeRo:67,
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         VOLUME = 13,
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        )

@ARTICLE(VaEr:82,
         AUTHOR = {T. J. Van Roy and D. Erlenkotter},
         TITLE = {A {D}ual-based {P}rocedure for {D}ynamic {F}acility {L}ocation}, 
         JOURNAL = {Management Science},
         YEAR = 1982,
         VOLUME = 28,
         PAGES = {1091--1105}
        )

@ARTICLE(ViHa:85,
         AUTHOR = {Jos{\'e} Viegas and Pierre Hansen},		 
         TITLE = {Finding shortest paths in the plane in the presence of barriers to travel (for any $l_p$-norm)},
         JOURNAL = EJOR,
         YEAR = 1985,
         VOLUME = 20,
         PAGES = {373--381}
        )

@article{Ward80,
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        title = "A new Norm for Measuring Distance which Yields Linear Location Problems",
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        pages = "836--843",
        year = 1980     }   
 
@ARTICLE(WaWe:85,
         AUTHOR = {James E. Ward and Richard E. Wendell},
         TITLE = {Using {B}lock {N}orms for {L}ocation {M}odelling},
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         YEAR = 1985,
         VOLUME = 33,
         NUMBER = 5,
         PAGES = {1074--1090},
         MONTH = {September--Oktober}
        )

@BOOK(Weber:09,
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      YEAR = 1909,
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@PHDTHESIS(Wesolowsky:70,
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           TITLE = {Facility location using rectilinear distances},
           YEAR = 1970
          )

@ARTICLE(WeLo:72,
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         YEAR = 1972,
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@ARTICLE(WeMc:81,
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         TITLE = {New {P}erspectives in {C}ompetitive {L}ocation {T}heory},
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         VOLUME = 6,
         PAGES = {174--182}
        )

@ARTICLE(Wilson:31,
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         VOLUME = 12,
         PAGES = {105--111}
        )

@TECHREPORT(Witzgall:64,
            AUTHOR = {Christoph Witzgall},
            TITLE = {Optimal {L}ocation of a {C}entral {F}acility, {M}athematical {M}odels and {C}oncepts},
            INSTITUTION = {National Bureau of Standards, Applied Mathematics Division, Operations Research Section},
            YEAR = 1964,
            NUMBER = {8388},
            ADDRESS = {U.~S. Department of Commerce, Washington, D.~C.},
            MONTH = {June 30}
           )

@ARTICLE(Witzgall:65,
         AUTHOR = {C. Witzgall},
         TITLE = {On {C}onvex {M}etrics},
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         YEAR = 1965,
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        )

@INCOLLECTION(Wolfe:70,
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              YEAR = 1970,
              EDITOR = {J.~Abadie},
              CHAPTER = {1},
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             )

@ARTICLE(Wolfe:76,
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@BOOK(Wonneberger:88,
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      EDITION = {Zweite}
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@INBOOK(Wright:92,
        AUTHOR = {Margaret H.~Wright},
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        YEAR = 1992,
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        ADDRESS = {New York}
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@BOOK(Wunderlich:67,
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@BOOK(YeKoKr:84,
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@BOOK(YOgr:72,
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@ARTICLE(XuRoPa:96,
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@TECHREPORT(XuYe:95,
           AUTHOR = {Guoliang Xue and Yinyu Ye},
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           INSTITUTION = {University of Vermont},
           YEAR = 1995,
           NUMBER = {CSEE/95/06-01},
           ADDRESS = {Department of Computer Science and Electrical Engineering, University of Vermont},
           MONTH = {June~20},
           NOTE = {Electronically distributed as \verb!ftp://col.biz.uiowa.edu/pub/papers/icecone.ps.Z!.}
            )


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  Crossreferenced: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 

@BOOK(Drezner:95,
      EDITOR = {Zvi Drezner},
      TITLE = {Facility {L}ocation: {A} {S}urvey of {A}pplications and {M}ethods},
      PUBLISHER = {Springer Verlag},
      YEAR = 1995,
      SERIES = {Springer {S}eries in {O}perations {R}esearch},
      ADDRESS = {New York}
     )

@BOOK(Abadie:70,
      EDITOR = {J.~Abadie},
      TITLE = {Integer and {N}onlinear {P}rogramming},
      PUBLISHER = {North-Holland Publishing Company},
      YEAR = 1970,
      ADDRESS = {Amsterdam, London}
     )      

@BOOK(WiRe:71,
      EDITOR = {J.~H.~Wilkinson and C.~Reinsch},
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      YEAR = 1971,
      NUMBER = 186,
      SERIES = {Die {G}rundlehren der mathematischen {W}issenschaften},
      ADDRESS = {Berlin, Heidelberg, New York}
    )

@PROCEEDINGS(LoLaTh:89,
             TITLE = {Facility location analysis: theory and applications},
             YEAR = 1989,
             EDITOR = {Fran{\c{c}}ois V. Louveaux and Martine Labb{\'e} and Jacques Fran{\c{c}}ois Thisse},
             PUBLISHER = {J. C. Baltzer AG Scientific Publishing Company},
             VOLUME = 18,
             SERIES = {Annals of Operations Research},
             ADDRESS = {Basel, Switzerland},
             MONTH = {February},
             REMARK = {Proceedings volume of ISOLDE IV, Namur, Belgium, 11.~June--16.~June 1987.}
            )

@PROCEEDINGS(BoKa:94,
             TITLE = {EWGLA 7 Proceedings},
             BOOKTITLE = {EWGLA 7 Proceedings},
	     YEAR = 1994,
             EDITOR = {Brian Boffey and John Karkazis},
             PUBLISHER = {Constantine Porphyrogenetus International Association},
             SERIES = {Studies in Locational Analysis},
             NUMBER = 7,
             ADDRESS = {Smirnis~1, Zografu, Athens~15772, Greece},
             MONTH = {November}
            )