@incollection{SB_1981-1982__24__347_0,
     author = {Tr\'epreau, Jean-Marie},
     title = {Syst\`emes diff\'erentiels \`a caract\'eristiques simples et structures r\'eelles-complexes},
     booktitle = {S\'eminaire Bourbaki : volume 1981/82, expos\'es 579-596},
     series = {Ast\'erisque},
     note = {talk:595},
     pages = {347--364},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {92-93},
     year = {1982},
     mrnumber = {689539},
     zbl = {0526.58045},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1981-1982__24__347_0/}
}