@article{SD_1969-1970__23_2_A10_0,
     author = {Neumann, Bernhard H.},
     title = {Quelques remarques sur les demi-groupes cancellatifs},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:DG 11},
     pages = {DG1--DG2},
     publisher = {Secr\'etariat math\'ematique},
     volume = {23},
     number = {2},
     year = {1969-1970},
     zbl = {0215.11401},
     language = {fr},
     url = {http://www.numdam.org/item/SD_1969-1970__23_2_A10_0/}
}