@article{SAC_1967-1968__2__A6_0,
     author = {Olivier, Jean-Pierre},
     title = {Anneaux absolument plats universels et \'epimorphismes \`a buts r\'eduits},
     journal = {S\'eminaire Samuel. Alg\`ebre commutative},
     note = {talk:6},
     pages = {1--12},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1967-1968},
     zbl = {0162.05701},
     language = {fr},
     url = {http://archive.numdam.org/item/SAC_1967-1968__2__A6_0/}
}