%0 Journal Article
%A A. I. Stepanets
%T Best approximations of infinitely differentiable functions in the space~$L_s$
%J Matematičeskie zametki
%D 1987
%P 21-32
%V 42
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1987_42_1_a2/
%G ru
%F MZM_1987_42_1_a2