@book{SB_1960-1961__6_,
     author = {Collectif},
     title = {S\'eminaire {Bourbaki} : ann\'ees 1960/61, expos\'es 205-222},
     series = {S\'eminaire Bourbaki},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {6},
     year = {1961},
     url = {http://archive.numdam.org/item/SB_1960-1961__6_/}
}