%0 Journal Article
%A G. V. Zhidkov
%T Inequalities for differential operators from algebraic polynomials on the sphere
%J Differencialʹnye uravneniâ
%D 1981
%P 479-487
%V 17
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1981_17_3_a5/
%G ru
%F DE_1981_17_3_a5