%0 Journal Article
%A Sun Yong-sheng
%A Li Chun
%T Best approximation of certain classes of smooth functions on the real axis by splines of a~higher order
%J Matematičeskie zametki
%D 1990
%P 100-109
%V 48
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1990_48_4_a10/
%G ru
%F MZM_1990_48_4_a10