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@article{TM_1979_150_a8, author = {G. G. Kazaryan}, title = {Comparison of the power of polynomials and their hypoellipticity}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {143--159}, publisher = {mathdoc}, volume = {150}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1979_150_a8/} }
G. G. Kazaryan. Comparison of the power of polynomials and their hypoellipticity. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Investigations in the theory of differentiable functions of many variables and its applications. Part 7, Tome 150 (1979), pp. 143-159. http://geodesic.mathdoc.fr/item/TM_1979_150_a8/