@article{SEDP_1979-1980____A11_0,
     author = {Ohya, Y.},
     title = {Le probl\`eme de {Cauchy} \`a caract\'eristiques multiples - {II}},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:10},
     pages = {1--10},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1979-1980},
     mrnumber = {600695},
     zbl = {0467.35088},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1979-1980____A11_0/}
}