%0 Journal Article %A S. B. Stechkin %T On the order of approximation of functions %J Trudy Instituta matematiki i mehaniki %D 1992 %P 90-96 %V 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_1992_1_a6/ %G ru %F TIMM_1992_1_a6