@article{PDML_1971__8_1_23_0,
     author = {Bouvier, Alain},
     title = {Demi-groupes avec base et demi-groupes atomiques},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {23--54},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {8},
     number = {1},
     year = {1971},
     mrnumber = {325819},
     zbl = {0251.20064},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1971__8_1_23_0/}
}