TY  - JOUR
AU  - A. I. Stepanets
TI  - Approximation of continuous periodic functions of many variables by spherical Riesz means
JO  - Matematičeskie zametki
PY  - 1974
SP  - 821
EP  - 832
VL  - 15
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1974_15_5_a18/
LA  - ru
ID  - MZM_1974_15_5_a18
ER  -