@article{SD_1956-1957__10__A2_0,
     author = {Petresco, Julien},
     title = {Relations fondamentales d\'efinissant les groupes libres},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:2},
     pages = {1--8},
     publisher = {Secr\'etariat math\'ematique},
     volume = {10},
     year = {1956-1957},
     zbl = {0118.03201},
     language = {fr},
     url = {http://www.numdam.org/item/SD_1956-1957__10__A2_0/}
}