no. 1
From the median to the generalized center
RAIRO - Operations Research - Recherche Opérationnelle, Tome 25 (1991) no. 1, pp. 73-86. 
@article{RO_1991__25_1_73_0,
     author = {Hansen, Pierre and Labb\'e, Martine and Thisse, Jacques-Fran\c{c}ois},
     title = {From the median to the generalized center},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {73--86},
     publisher = {EDP-Sciences},
     volume = {25},
     number = {1},
     year = {1991},
     mrnumber = {1110776},
     zbl = {0760.90063},
     language = {en},
     url = {http://archive.numdam.org/item/RO_1991__25_1_73_0/}
}
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Hansen, Pierre; Labbé, Martine; Thisse, Jacques-François. From the median to the generalized center. RAIRO - Operations Research - Recherche Opérationnelle, Tome 25 (1991) no. 1, pp. 73-86. http://archive.numdam.org/item/RO_1991__25_1_73_0/

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