TY  - JOUR
AU  - A. S. Belov
TI  - On the coefficients of trigonometric cosine-series with non-negative partial sums
JO  - Informatics and Automation
PY  - 1989
SP  - 3
EP  - 21
VL  - 190
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1989_190_a0/
LA  - ru
ID  - TRSPY_1989_190_a0
ER  -