@article{SAC_1967-1968__2__A4_0,
     author = {Lazard, Daniel},
     title = {\'Epimorphismes plats},
     journal = {S\'eminaire Samuel. Alg\`ebre commutative},
     note = {talk:4},
     pages = {1--12},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1967-1968},
     zbl = {0201.04601},
     language = {fr},
     url = {http://www.numdam.org/item/SAC_1967-1968__2__A4_0/}
}