TY  - JOUR
AU  - A. S. Belov
TI  - Some upper bounds of partial sums of a~trigonometric series cannot be sharpened via lower bounds
JO  - Matematičeskie zametki
PY  - 1995
SP  - 447
EP  - 451
VL  - 58
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1995_58_3_a12/
LA  - ru
ID  - MZM_1995_58_3_a12
ER  -