@incollection{AST_1979__65__125_0,
     author = {Langlands, R. P.},
     title = {Sur la mauvaise r\'eduction d'une vari\'et\'e de {Shimura}},
     booktitle = {Journ\'ees de g\'eom\'etrie alg\'ebrique de Rennes - (Juillet 1978)  (III) - Groupes formels, repr\'esentations galoisiennes et cohomologie des vari\'et\'es de caract\'eristique positive},
     series = {Ast\'erisque},
     pages = {125--154},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {65},
     year = {1979},
     zbl = {0469.22014},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1979__65__125_0/}
}