@book{SB_1948-1951__1_,
     author = {Collectif},
     title = {S\'eminaire {Bourbaki} : ann\'ees 1948/49 - 1949/50 - 1950/51, expos\'es 1-49},
     series = {S\'eminaire Bourbaki},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {1},
     year = {1952},
     url = {http://www.numdam.org/item/SB_1948-1951__1_/}
}