%0 Journal Article
%A N. P. Kuptsov
%T Direct and inverse approximation theorems in Banach spaces and Fourier transforms
%J Matematičeskie zametki
%D 1970
%P 765-778
%V 7
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1970_7_6_a12/
%G ru
%F MZM_1970_7_6_a12