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@article{TM_1981_155_a2, author = {E. M. Dyn'kin}, title = {Constructive characterization of {S.\,L.~Sobolev} and {O.\,V.~Besov} classes}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {41--76}, publisher = {mathdoc}, volume = {155}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1981_155_a2/} }
E. M. Dyn'kin. Constructive characterization of S.\,L.~Sobolev and O.\,V.~Besov classes. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Spectral theory of functions and operators. Part II, Tome 155 (1981), pp. 41-76. http://geodesic.mathdoc.fr/item/TM_1981_155_a2/