@book{SB_1976-1977__19_,
     author = {Collectif},
     title = {S\'eminaire {Bourbaki} : vol. 1976/77, expos\'es 489-506},
     series = {S\'eminaire Bourbaki},
     publisher = {Springer-Verlag},
     number = {19},
     year = {1978},
     url = {http://www.numdam.org/item/SB_1976-1977__19_/}
}