%0 Journal Article %A V. N. Temlyakov %T Approximation by elements of a finite-dimensional subspace of functions from various Sobolev or Nikol'skii spaces %J Matematičeskie zametki %D 1988 %P 770-785 %V 43 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1988_43_6_a6/ %G ru %F MZM_1988_43_6_a6