@article{SD_1962-1963__16_2_A1_0,
     author = {Calais, Josette},
     title = {\'Equivalences principales g\'en\'eralis\'ees dans les demi-groupes},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:12},
     pages = {1--25},
     publisher = {Secr\'etariat math\'ematique},
     volume = {16},
     number = {2},
     year = {1962-1963},
     zbl = {0203.02002},
     language = {fr},
     url = {http://archive.numdam.org/item/SD_1962-1963__16_2_A1_0/}
}