@incollection{SB_1997-1998__40__287_0,
     author = {Littelmann, Peter},
     title = {Bases canoniques et applications},
     booktitle = {S\'eminaire Bourbaki : volume 1997/98, expos\'es 835-849},
     series = {Ast\'erisque},
     note = {talk:847},
     pages = {287--306},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {252},
     year = {1998},
     mrnumber = {1685632},
     zbl = {0966.17009},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1997-1998__40__287_0/}
}