@incollection{JEDP_1977____181_0,
     author = {Sj\"ostrand, Johannes},
     title = {Sur certains complexes d'op\'erateurs pseudodiff\'erentiels},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     pages = {181--189},
     publisher = {Ecole polytechnique},
     year = {1977},
     language = {fr},
     url = {http://www.numdam.org/item/JEDP_1977____181_0/}
}