%0 Journal Article
%A N. P. Korneichuk
%T On uniform approximation of periodic functions by subspaces of finite dimension
%J Doklady Akademii Nauk
%D 1973
%P 525-528
%V 213
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_213_3_a6/
%G ru
%F DAN_1973_213_3_a6