TY  - JOUR
AU  - A. S. Belov
TI  - On unimprovability of some theorems on convergence in mean of trigonometric series
JO  - Fundamentalʹnaâ i prikladnaâ matematika
PY  - 2018
SP  - 31
EP  - 49
VL  - 22
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FPM_2018_22_1_a2/
LA  - ru
ID  - FPM_2018_22_1_a2
ER  -