TY  - JOUR
AU  - M. Sh. Shabozov
TI  - Some problems of approximation of periodic functions by trigonometric polynomials in $L_2$
JO  - Čebyševskij sbornik
PY  - 2019
SP  - 385
EP  - 398
VL  - 20
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CHEB_2019_20_4_a24/
LA  - ru
ID  - CHEB_2019_20_4_a24
ER  -