@article{SEDP_1989-1990____A12_0,
     author = {Leichtnam, Eric},
     title = {Le probl\`eme de {Cauchy} ramifi\'e {I}},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:10},
     pages = {1--22},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1989-1990},
     mrnumber = {1073185},
     zbl = {0713.35022},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1989-1990____A12_0/}
}