@incollection{JEDP_1979____A5_0,
     author = {Schapira, Pierre},
     title = {Conditions de positivit\'e dans une vari\'et\'e symplectique complexe. {Applications} \`a l'\'etude de l'hypoellipticit\'e analytique},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {5},
     pages = {1--6},
     year = {1979},
     publisher = {Ecole polytechnique},
     doi = {10.5802/jedp.191},
     language = {fr},
     url = {https://www.numdam.org/articles/10.5802/jedp.191/}
}