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@article{DAN_1969_188_1_a3, author = {Yu. V. Egorov}, title = {Subelliptic pseudodifferential operators}, journal = {Doklady Akademii Nauk}, pages = {20--22}, publisher = {mathdoc}, volume = {188}, number = {1}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_188_1_a3/} }
Yu. V. Egorov. Subelliptic pseudodifferential operators. Doklady Akademii Nauk, Tome 188 (1969) no. 1, pp. 20-22. http://geodesic.mathdoc.fr/item/DAN_1969_188_1_a3/