@article{XUPS_1997____31_0,
     author = {Weil, Jacques-Arthur},
     title = {Calcul formel pour les~\'equations~diff\'erentielles~lin\'eaires},
     journal = {Journ\'ees math\'ematiques X-UPS},
     pages = {31--53},
     publisher = {Les \'Editions de l{\textquoteright}\'Ecole polytechnique},
     year = {1997},
     doi = {10.5802/xups.1997-02},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.5802/xups.1997-02/}
}