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@article{DAN_1961_137_4_a2, author = {V. V. Grushin}, title = {A property of the solution of a hypoelliptic equation}, journal = {Doklady Akademii Nauk}, pages = {768--771}, publisher = {mathdoc}, volume = {137}, number = {4}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_4_a2/} }
V. V. Grushin. A property of the solution of a hypoelliptic equation. Doklady Akademii Nauk, Tome 137 (1961) no. 4, pp. 768-771. http://geodesic.mathdoc.fr/item/DAN_1961_137_4_a2/