@article{PDML_1968__5_2_57_0,
     author = {Achache, Achille},
     title = {Sur la g\'en\'eration},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {57--72},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {5},
     number = {2},
     year = {1968},
     mrnumber = {256941},
     zbl = {0177.02402},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1968__5_2_57_0/}
}