@incollection{AST_1985__130__420_0, author = {AST}, title = {Abstract}, booktitle = {Syst\`emes diff\'erentiels et singularit\'es}, editor = {Galligo, A. and Granger, M. and Maisonobe, Ph.}, series = {Ast\'erisque}, publisher = {Soci\'et\'e math\'ematique de France}, number = {130}, year = {1985}, language = {en}, url = {http://archive.numdam.org/item/AST_1985__130__420_0/} }