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@article{DAN_1986_288_1_a10, author = {S. M. Nikol'skii and P. I. Lizorkin}, title = {Inequalities of {Bernstein} type for spherical polynomials}, journal = {Doklady Akademii Nauk}, pages = {50--53}, publisher = {mathdoc}, volume = {288}, number = {1}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1986_288_1_a10/} }
S. M. Nikol'skii; P. I. Lizorkin. Inequalities of Bernstein type for spherical polynomials. Doklady Akademii Nauk, Tome 288 (1986) no. 1, pp. 50-53. http://geodesic.mathdoc.fr/item/DAN_1986_288_1_a10/