@article{CMH_1978__53_139741,
     author = {Charles Cassidy},
     title = {Le genre d'un groupe nilpotent avec op\'erateurs.},
     journal = {Commentarii mathematici Helvetici},
     pages = {364--384},
     publisher = {mathdoc},
     volume = {53},
     year = {1978},
     zbl = {0388.20034},
     url = {http://geodesic.mathdoc.fr/item/CMH_1978__53_139741/}
}