@incollection{AST_1987__150-151__1_0,
     author = {AST},
     title = {Singularit\'es d'\'equations diff\'erentielles - {Dijon,} 20-25 mai 1985 - {Pages} pr\'eliminaires},
     booktitle = {Singularit\'es d'\'equations diff\'erentielles - Dijon, 20-25 mai 1985},
     series = {Ast\'erisque},
     pages = {1--13},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {150-151},
     year = {1987},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1987__150-151__1_0/}
}