%0 Journal Article %A V. O. Leont'ev %T Asymptotics of the approximation of differentiable functions by %J Doklady Akademii Nauk %D 1992 %P 31-34 %V 326 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1992_326_1_a5/ %G ru %F DAN_1992_326_1_a5