%0 Journal Article
%A N. P. Korneichuk
%T Best approximation by splines on classes of periodic functions in the metric of $L$
%J Matematičeskie zametki
%D 1976
%P 655-664
%V 20
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1976_20_5_a3/
%G ru
%F MZM_1976_20_5_a3