TY  - JOUR
AU  - A. I. Stepanets
TI  - Approximation by Riesz sums of periodic functions of H\"older classes
JO  - Matematičeskie zametki
PY  - 1977
SP  - 341
EP  - 354
VL  - 21
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1977_21_3_a6/
LA  - ru
ID  - MZM_1977_21_3_a6
ER  -