%0 Journal Article %A Yu. S. Nikol'skii %T Direct and inverse imbedding theorems for weighted classes of differentiable functions %J Doklady Akademii Nauk %D 1974 %P 270-273 %V 215 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1974_215_2_a6/ %G ru %F DAN_1974_215_2_a6