@article{ITA_1987__21_2_181_0,
     author = {Bordat, J. P.},
     title = {Complexit\'e de probl\`emes li\'es aux graphes sans circuit},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {181--197},
     publisher = {EDP-Sciences},
     volume = {21},
     number = {2},
     year = {1987},
     mrnumber = {894710},
     zbl = {0634.68031},
     language = {fr},
     url = {http://www.numdam.org/item/ITA_1987__21_2_181_0/}
}