%0 Journal Article
%A M. G. Esmaganbetov
%T Widths of classes from $L_2[0,2\pi]$ and the minimization of exact constants in Jackson-type inequalities
%J Matematičeskie zametki
%D 1999
%P 816-820
%V 65
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1999_65_6_a2/
%G ru
%F MZM_1999_65_6_a2