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@article{DAN_1964_155_1_a3, author = {B. R. Vainberg}, title = {Hypo-elliptic equations in the whole space and the principle of limiting absorption}, journal = {Doklady Akademii Nauk}, pages = {20--23}, publisher = {mathdoc}, volume = {155}, number = {1}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1964_155_1_a3/} }
B. R. Vainberg. Hypo-elliptic equations in the whole space and the principle of limiting absorption. Doklady Akademii Nauk, Tome 155 (1964) no. 1, pp. 20-23. http://geodesic.mathdoc.fr/item/DAN_1964_155_1_a3/