TY  - JOUR
AU  - G. V. Zhidkov
TI  - Inequalities for differential operators from algebraic polynomials on the sphere
JO  - Differencialʹnye uravneniâ
PY  - 1981
SP  - 479
EP  - 487
VL  - 17
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1981_17_3_a5/
LA  - ru
ID  - DE_1981_17_3_a5
ER  -