@article{SEDP_1977-1978____A3_0,
     author = {M\'etivier, G.},
     title = {Une caract\'erisation des op\'erateurs elliptiques autoadjoints},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:2},
     pages = {1--15},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1977-1978},
     mrnumber = {504131},
     zbl = {0397.35027},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1977-1978____A3_0/}
}