%0 Journal Article
%A A. Yu. Popov
%T Refinement of Estimates of Sums of Sine Series with Monotone Coefficients and Cosine Series with Convex Coefficients
%J Matematičeskie zametki
%D 2021
%P 768-780
%V 109
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2021_109_5_a8/
%G ru
%F MZM_2021_109_5_a8