@incollection{AST_1980__74__15_0,
     author = {Guivarc'h, Yves},
     title = {Th\'eor\`emes quotients pour les marches al\'eatoires},
     booktitle = {Journ\'ees sur les marches al\'eatoires},
     series = {Ast\'erisque},
     pages = {15--28},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {74},
     year = {1980},
     mrnumber = {588155},
     zbl = {0448.60006},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1980__74__15_0/}
}