@incollection{JEDP_1975____3_0, author = {Alinhac, Serge}, title = {Param\'etrix et propagation des singularit\'es pour un probl\`eme de {Cauchy} \`a multiplicit\'e variable}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, pages = {3--26}, publisher = {Ecole polytechnique}, year = {1975}, mrnumber = {58 #6719}, language = {fr}, url = {http://archive.numdam.org/item/JEDP_1975____3_0/} }