%0 Journal Article %A A. S. Belov %T On the coefficients of trigonometric cosine-series with non-negative partial sums %J Informatics and Automation %D 1989 %P 3-21 %V 190 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1989_190_a0/ %G ru %F TRSPY_1989_190_a0