TY  - JOUR
AU  - N. A. Il'yasov
TI  - Approximation of periodic functions by Fejer--Zygmund means in various metrics
JO  - Matematičeskie zametki
PY  - 1990
SP  - 48
EP  - 57
VL  - 48
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_48_4_a5/
LA  - ru
ID  - MZM_1990_48_4_a5
ER  -