@article{SEDP_1983-1984____A9_0,
     author = {Lerner, N. and Robbiano, L.},
     title = {Unicit\'e de {Cauchy} pour des op\'erateurs de type principal \`a coefficients $C^\infty $},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:9},
     pages = {1--9},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1983-1984},
     zbl = {0551.35016},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1983-1984____A9_0/}
}