@article{M2AN_1971__5_2_108_0,
     author = {Guignard, Monique},
     title = {Br\`eves communications. {Une} condition d'optimalit\'e en programmation en nombres entiers},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {108--113},
     publisher = {Dunod},
     address = {Paris},
     volume = {5},
     number = {R2},
     year = {1971},
     mrnumber = {314455},
     zbl = {0236.90054},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1971__5_2_108_0/}
}