%0 Journal Article %A S. M. Nikol'skii %A A. M. Bogomolov %A Al. A. Privalov %T Third Saratov Winter School ``Modern Problems of Theory of Functions and Applications'' %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1987 %V 42 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1987_42_3_a28/ %G ru %F RM_1987_42_3_a28