@incollection{JEDP_1977____59_0,
     author = {\'Elisabeth Croc and Yves Dermenjian and Viorel Iftimie},
     title = {Une classe d'op\'erateurs pseudo-diff\'erentiels partiellement hypoelliptique-analytiques},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     pages = {59--65},
     publisher = {\'Ecole polytechnique},
     year = {1977},
     language = {fr},
     url = {https://proceedings.centre-mersenne.org/item/JEDP_1977____59_0/}
}