@article{SEDP_1984-1985____A20_0,
     author = {Boutet de Monvel, L.},
     title = {Op\'erateurs \`a bicaract\'eristiques p\'eriodiques},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:20},
     pages = {1--12},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1984-1985},
     zbl = {0576.58029},
     mrnumber = {819786},
     language = {fr},
     url = {http://www.numdam.org/item/SEDP_1984-1985____A20_0/}
}