%0 Journal Article %A V. S. Serov %T Absolute convergence of spectral expansions in generalized Besov classes %J Differencialʹnye uravneniâ %D 1979 %P 293-302 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_2_a11/ %G ru %F DE_1979_15_2_a11