%0 Journal Article
%A Yu. N. Subbotin
%T The best approximation of a class of functions by another class
%J Matematičeskie zametki
%D 1967
%P 495-504
%V 2
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1967_2_5_a6/
%G ru
%F MZM_1967_2_5_a6