@article{RO_2006__40_2_143_0,
     author = {Thizy, Jean-Michel},
     title = {An ex-post bound on the greedy heuristic for the uncapacitated facility location problem},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {143--167},
     publisher = {EDP-Sciences},
     volume = {40},
     number = {2},
     year = {2006},
     doi = {10.1051/ro:2006016},
     mrnumber = {2272684},
     zbl = {1115.90033},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ro:2006016/}
}