@article{SEDP_1972-1973____A21_0,
     author = {de Paris, J. C.},
     title = {Probl\`eme de {Cauchy} asymptotique. {Lien} avec l'hyperbolicit\'e},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:20},
     pages = {1--17},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1972-1973},
     mrnumber = {509924},
     zbl = {0263.35063},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1972-1973____A21_0/}
}