%0 Journal Article
%A N. A. Il'yasov
%T The direct theorem of the theory of approximation of periodic functions with monotone Fourier coefficients in different metrics
%J Trudy Instituta matematiki i mehaniki
%D 2017
%P 144-158
%V 23
%N 3
%U http://geodesic.mathdoc.fr/item/TIMM_2017_23_3_a12/
%G ru
%F TIMM_2017_23_3_a12