@article{ASENS_1981_4_14_2_209_0,
     author = {Bony, Jean-Michel},
     title = {Calcul symbolique et propagation des singularit\'es pour les \'equations aux d\'eriv\'ees partielles non lin\'eaires},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {209--246},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 14},
     number = {2},
     year = {1981},
     doi = {10.24033/asens.1404},
     mrnumber = {84h:35177},
     zbl = {0495.35024},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/asens.1404/}
}