%0 Journal Article %A Yu. A. Brudnyi %T Rational approximation and imbedding theorems %J Doklady Akademii Nauk %D 1979 %P 269-272 %V 247 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_247_2_a1/ %G ru %F DAN_1979_247_2_a1