%0 Journal Article %A L. A. Sakhnovich %T Operators which are similar to unitary operators with absolutely continuous spectrum %J Funkcionalʹnyj analiz i ego priloženiâ %D 1968 %P 51-63 %V 2 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1968_2_1_a4/ %G ru %F FAA_1968_2_1_a4