@incollection{AST_2010__330__R19_0,
     author = {Colmez, Pierre},
     title = {Introduction},
     booktitle = {Repr\'esentations $p$-adiques de groupes $p$-adiques II : Repr\'esentations de $\mathbf{GL}_2 (\mathbf{Q}_p)$ et $(\varphi, \Gamma)$-modules},
     editor = {Berger, Laurent and Breuil, Christophe and Colmez, Pierre},
     series = {Ast\'erisque},
     pages = {xix--xxiii},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {330},
     year = {2010},
     mrnumber = {2642402},
     language = {fr},
     url = {http://www.numdam.org/item/AST_2010__330__R19_0/}
}