@article{SD_1974-1975__28_1_A22_0,
     author = {Cohn, Paul M.},
     title = {Num\'erateurs et d\'enominateurs dans le corps de fractions d'un semifir},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:28},
     pages = {1--7},
     publisher = {Secr\'etariat math\'ematique},
     volume = {28},
     number = {1},
     year = {1974-1975},
     zbl = {0316.16003},
     language = {fr},
     url = {http://www.numdam.org/item/SD_1974-1975__28_1_A22_0/}
}