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@article{DAN_1973_209_5_a7, author = {S. A. Smagin}, title = {Fractional powers of a hypoelliptic operator in $\mathbf{R}^n$}, journal = {Doklady Akademii Nauk}, pages = {1033--1035}, publisher = {mathdoc}, volume = {209}, number = {5}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_5_a7/} }
S. A. Smagin. Fractional powers of a hypoelliptic operator in $\mathbf{R}^n$. Doklady Akademii Nauk, Tome 209 (1973) no. 5, pp. 1033-1035. http://geodesic.mathdoc.fr/item/DAN_1973_209_5_a7/