@incollection{JEDP_1975____43_0,
     author = {Jean-Michel Bony},
     title = {Propagation des singularit\'es diff\'erentiables pour une classe d'op\'erateurs diff\'erentiels \`a coefficients analytiques},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     pages = {43--91},
     publisher = {\'Ecole polytechnique},
     year = {1975},
     mrnumber = {58 #23199},
     language = {fr},
     url = {https://proceedings.centre-mersenne.org/item/JEDP_1975____43_0/}
}