@incollection{JEDP_1986____A15_0, author = {Matsuzawa, Tadato}, title = {Hypoellipticit\'e et hyperfonctions}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {15}, pages = {1--5}, publisher = {Ecole polytechnique}, year = {1986}, mrnumber = {874557}, zbl = {0602.35006}, language = {fr}, url = {http://archive.numdam.org/item/JEDP_1986____A15_0/} }