@incollection{AST_2010__331__117_0,
     author = {Breuil, Christophe and M\'ezard, Ariane},
     title = {Repr\'esentations semi-stables de $GL_2 (\mathbb{Q}_p)$, demi-plan $p$-adique et r\'eduction modulo $p$},
     booktitle = {Repr\'esentations $p$-adiques de groupes $p$-adiques III : m\'ethodes globales et g\'eom\'etriques},
     series = {Ast\'erisque},
     pages = {117--178},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {331},
     year = {2010},
     mrnumber = {2667888},
     zbl = {1271.11106},
     language = {fr},
     url = {http://www.numdam.org/item/AST_2010__331__117_0/}
}