%0 Journal Article %A V. V. Ditkin %T Certain spectral properties of a pencil of linear bounded operators %J Matematičeskie zametki %D 1982 %P 75-79 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1982_31_1_a7/ %G ru %F MZM_1982_31_1_a7