TY  - JOUR
AU  - A. G. Babenko
TI  - On the Jackson--Stechkin inequality for the best $L^2$-approximations of functions by trigonometric polynomials
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2001
SP  - 30
EP  - 46
VL  - 7
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TIMM_2001_7_1_a2/
LA  - ru
ID  - TIMM_2001_7_1_a2
ER  -