%0 Journal Article %A G. M. Gubreev %T On a class of unconditional bases in Hilbert spaces and on the~problem of similarity of dissipative Volterra operators %J Sbornik. Mathematics %D 1994 %P 93-126 %V 77 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1994_77_1_a6/ %G en %F SM_1994_77_1_a6