@article{RO_2014__48_2_153_0,
     author = {Ba{\"\i}ou, Mourad and Barahona, Francisco},
     title = {A polyhedral study of a two level facility location model},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {153--165},
     publisher = {EDP-Sciences},
     volume = {48},
     number = {2},
     year = {2014},
     doi = {10.1051/ro/2014003},
     mrnumber = {3264373},
     zbl = {1294.05145},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ro/2014003/}
}