@book{SB_1997-1998__40_,
     author = {Collectif},
     title = {S\'eminaire {Bourbaki} : volume 1997/98, expos\'es 835-849},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {252},
     year = {1998},
     url = {http://archive.numdam.org/item/SB_1997-1998__40_/}
}