@article{ITA_1987__21_1_25_0,
     author = {Lobstein, Antoine and Cohen, G\'erard},
     title = {Sur la complexit\'e d'un probl\`eme de codage},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {25--32},
     publisher = {EDP-Sciences},
     volume = {21},
     number = {1},
     year = {1987},
     mrnumber = {882868},
     zbl = {0618.94012},
     language = {fr},
     url = {http://archive.numdam.org/item/ITA_1987__21_1_25_0/}
}