TY - JOUR AU - E. M. Dyn'kin TI - Constructive characterization of S.\,L.~Sobolev and O.\,V.~Besov classes JO - Informatics and Automation PY - 1981 SP - 41 EP - 76 VL - 155 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1981_155_a2/ LA - ru ID - TRSPY_1981_155_a2 ER -