%0 Journal Article %A E. M. Dyn'kin %T Constructive characterization of S.\,L.~Sobolev and O.\,V.~Besov classes %J Informatics and Automation %D 1981 %P 41-76 %V 155 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1981_155_a2/ %G ru %F TRSPY_1981_155_a2