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@article{DE_1981_17_3_a5, author = {G. V. Zhidkov}, title = {Inequalities for differential operators from algebraic polynomials on the sphere}, journal = {Differencialʹnye uravneni\^a}, pages = {479--487}, publisher = {mathdoc}, volume = {17}, number = {3}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1981_17_3_a5/} }
G. V. Zhidkov. Inequalities for differential operators from algebraic polynomials on the sphere. Differencialʹnye uravneniâ, Tome 17 (1981) no. 3, pp. 479-487. http://geodesic.mathdoc.fr/item/DE_1981_17_3_a5/