TY - JOUR AU - V. N. Temlyakov TI - Approximation by elements of a finite-dimensional subspace of functions from various Sobolev or Nikol'skii spaces JO - Matematičeskie zametki PY - 1988 SP - 770 EP - 785 VL - 43 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1988_43_6_a6/ LA - ru ID - MZM_1988_43_6_a6 ER -