@article{RO_1979__13_1_81_0,
     author = {Lenormand, F. and Walliser, B.},
     title = {Mod\'elisation du service de surveillance douani\`ere terrestre},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {81--94},
     publisher = {EDP-Sciences},
     volume = {13},
     number = {1},
     year = {1979},
     zbl = {0394.90057},
     language = {fr},
     url = {http://www.numdam.org/item/RO_1979__13_1_81_0/}
}