@article{RO_1981__15_1_1_0,
     author = {Bod, P.},
     title = {Sur l'invariance de l'optimum dans certains mod\`eles lin\'eaires de planification en regard des changements de prix},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {1--14},
     publisher = {EDP-Sciences},
     volume = {15},
     number = {1},
     year = {1981},
     zbl = {0452.90014},
     language = {fr},
     url = {http://www.numdam.org/item/RO_1981__15_1_1_0/}
}