@article{SEDP_1985-1986____A6_0,
     author = {Lascar, B.},
     title = {Propagation des singularit\'es {Gevrey} pour des op\'erateurs hyperboliques},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:6},
     pages = {1--9},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1985-1986},
     mrnumber = {874565},
     zbl = {0606.58049},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1985-1986____A6_0/}
}