@article{RO_1991__25_1_65_0,
     author = {Pelegrin, Blas},
     title = {Heuristic methods for the $p$-center problem},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {65--72},
     publisher = {EDP-Sciences},
     volume = {25},
     number = {1},
     year = {1991},
     mrnumber = {1110775},
     zbl = {0732.90056},
     language = {en},
     url = {http://archive.numdam.org/item/RO_1991__25_1_65_0/}
}