@incollection{AST_1985__130__352_0, author = {Laurent, Yves}, title = {Calcul d'indices et irr\'egularit\'e pour les syst\`emes holonomes}, 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}, zbl = {0569.58031}, mrnumber = {804063}, language = {fr}, url = {http://archive.numdam.org/item/AST_1985__130__352_0/} }