@article{SEDP_1975-1976____A18_0,
     author = {Bony, J. M.},
     title = {Extensions du th\'eor\`eme de {Holmgren}},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:17},
     pages = {1--12},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1975-1976},
     mrnumber = {474426},
     zbl = {0336.35003},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1975-1976____A18_0/}
}