%0 Journal Article %A K. S. Kazarian %T On some questions in the theory of orthogonal series %J Sbornik. Mathematics %D 1984 %P 269-285 %V 47 %N 1 %U http://geodesic.mathdoc.fr/item/SM_1984_47_1_a14/ %G en %F SM_1984_47_1_a14