@incollection{JEDP_1979____A1_0,
     author = {Bony, Jean-Michel},
     title = {Calcul symbolique et singularit\'es des solutions des \'equations aux d\'eriv\'ees partielles non lin\'eaires},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {1},
     pages = {1--7},
     publisher = {\'Ecole polytechnique},
     year = {1979},
     doi = {10.5802/jedp.187},
     zbl = {0499.35031},
     mrnumber = {80i:35046},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.5802/jedp.187/}
}