@incollection{JEDP_1982____A19_0,
     author = {Bernard Hanouzet and Jean-Luc Joly},
     title = {Formes bilin\'eaires compatibles avec un syst\`eme},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {19},
     pages = {1--5},
     publisher = {\'Ecole polytechnique},
     year = {1982},
     language = {fr},
     url = {https://proceedings.centre-mersenne.org/item/JEDP_1982____A19_0/}
}