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@article{DAN_1965_160_4_a1, author = {V. N. Gorchakov}, title = {Asymptotic properties of the spectral function of hypoelliptic operators}, journal = {Doklady Akademii Nauk}, pages = {746--749}, publisher = {mathdoc}, volume = {160}, number = {4}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_4_a1/} }
V. N. Gorchakov. Asymptotic properties of the spectral function of hypoelliptic operators. Doklady Akademii Nauk, Tome 160 (1965) no. 4, pp. 746-749. http://geodesic.mathdoc.fr/item/DAN_1965_160_4_a1/