@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},
     year = {1986},
     publisher = {Ecole polytechnique},
     doi = {10.5802/jedp.320},
     mrnumber = {874557},
     zbl = {0602.35006},
     language = {fr},
     url = {https://www.numdam.org/articles/10.5802/jedp.320/}
}