TY  - JOUR
AU  - O. I. Kuznetsova
AU  - R. M. Trigub
TI  - Two-sided estimates of the approximation of functions by Riesz and Marcinkiewicz means
JO  - Doklady Akademii Nauk
PY  - 1980
SP  - 34
EP  - 36
VL  - 251
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1980_251_1_a8/
LA  - ru
ID  - DAN_1980_251_1_a8
ER  -