%0 Journal Article
%A Sun Yong-sheng
%T On the best approximation of classes of functions representable in the convolution form
%J Doklady Akademii Nauk
%D 1958
%P 247-250
%V 118
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1958_118_2_a10/
%G ru
%F DAN_1958_118_2_a10