@article{SD_1966-1967__20_2_A4_0,
     author = {Desq, Roger},
     title = {Structure des demi-groupes},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:16},
     pages = {1--17},
     publisher = {Secr\'etariat math\'ematique},
     volume = {20},
     number = {2},
     year = {1966-1967},
     zbl = {0194.02402},
     language = {fr},
     url = {http://www.numdam.org/item/SD_1966-1967__20_2_A4_0/}
}