@article{SD_1970-1971__24_1_A5_0, author = {Bouvier, Alain}, title = {Demi-groupes pr\'esimplifiables}, journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres}, note = {talk:6}, pages = {1--17}, publisher = {Secr\'etariat math\'ematique}, volume = {24}, number = {1}, year = {1970-1971}, mrnumber = {414749}, zbl = {0246.20058}, language = {fr}, url = {http://archive.numdam.org/item/SD_1970-1971__24_1_A5_0/} }