@article{JEDP_1982____A19_0, author = {Hanouzet, Bernard and Joly, Jean-Luc}, title = {Formes bilin\'eaires compatibles avec un syst\`eme}, journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {19}, publisher = {Ecole polytechnique}, year = {1982}, language = {fr}, url = {http://archive.numdam.org/item/JEDP_1982____A19_0/} }