@article{ITA_1979__13_3_251_0,
     author = {Poussin, F.},
     title = {\'Enum\'eration des permutations par nombre de marches},
     journal = {RAIRO. Informatique th\'eorique},
     pages = {251--255},
     publisher = {EDP-Sciences},
     volume = {13},
     number = {3},
     year = {1979},
     mrnumber = {554686},
     zbl = {0434.05002},
     language = {fr},
     url = {http://www.numdam.org/item/ITA_1979__13_3_251_0/}
}