%0 Journal Article
%A V. A. Opershtein
%T A constructive characterization of the spaces $B_{pq}^\psi[-1,1]$ by means of approximations by algebraic polynomials
%J Doklady Akademii Nauk
%D 1990
%P 542-545
%V 310
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_310_3_a6/
%G ru
%F DAN_1990_310_3_a6