TY  - JOUR
AU  - A. P. Terekhin
TI  - Approximation in $L_p$ by spherical polynomials and differential classes of functions on sphere
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1989
SP  - 216
EP  - 226
VL  - 187
UR  - http://geodesic.mathdoc.fr/item/TM_1989_187_a13/
LA  - ru
ID  - TM_1989_187_a13
ER  -