@article{SD_1948-1950__2-3__A4_0,
     author = {Lesieur, L\'eonce},
     title = {Vari\'et\'es alg\'ebriques, {IV} : produit de deux vari\'et\'es, projections, vari\'et\'es lin\'eaires et points simples},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:4},
     pages = {1--21},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2-3},
     year = {1948-1950},
     language = {fr},
     url = {http://www.numdam.org/item/SD_1948-1950__2-3__A4_0/}
}