@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},
     pages = {1--12},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1967-1968},
     zbl = {0175.03702},
     language = {fr},
     url = {http://www.numdam.org/item/SAC_1967-1968__2__A3_0/}
}