@article{SAC_1967-1968__2__A3_0, author = {Roby, Norbert}, title = {Diverses caract\'erisations des \'epimorphismes}, journal = {S\'eminaire Samuel. Alg\`ebre commutative}, note = {talk:3}, publisher = {Secr\'etariat math\'ematique}, volume = {2}, year = {1967-1968}, zbl = {0175.03702}, language = {fr}, url = {http://archive.numdam.org/item/SAC_1967-1968__2__A3_0/} }