@incollection{SB_1983-1984__26__105_0, author = {Tits, Jacques}, title = {Le monstre}, booktitle = {S\'eminaire Bourbaki : volume 1983/84, expos\'es 615-632}, author = {Collectif}, series = {Ast\'erisque}, note = {talk:620}, publisher = {Soci\'et\'e math\'ematique de France}, number = {121-122}, year = {1985}, zbl = {0548.20010}, mrnumber = {768956}, language = {fr}, url = {http://www.numdam.org/item/SB_1983-1984__26__105_0/} }