@incollection{JEDP_1983____A3_0,
     author = {Tr\`eves, Fran\c{c}ois},
     title = {Sur l'exactitude des complexes diff\'erentiels de type de {Lewy}},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {3},
     pages = {1--14},
     publisher = {\'Ecole polytechnique},
     year = {1983},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/JEDP_1983____A3_0/}
}