@incollection{JEDP_1978____A9_0, author = {Baouendi, Mohamed S.}, title = {Constructions de solutions plates et singuli\`eres d'\'equations aux d\'eriv\'ees partielles \`a coefficients analytiques}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {9}, pages = {1--2}, publisher = {Ecole polytechnique}, year = {1978}, language = {fr}, url = {http://archive.numdam.org/item/JEDP_1978____A9_0/} }