@incollection{JEDP_1979____A12_0, author = {Zuily, Claude}, title = {Unicit\'e du probl\`eme de {Cauchy} pour une classe d'op\'erateurs diff\'erentiels \`a caract\'eristiques de multiplicit\'e constante}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {12}, pages = {1--5}, publisher = {Ecole polytechnique}, year = {1979}, mrnumber = {83c:35003}, zbl = {0409.35001}, language = {fr}, url = {http://www.numdam.org/item/JEDP_1979____A12_0/} }