%0 Journal Article %A V. N. Pyvovarchyk %T The spectrum of quadratic operator pencils in the right half-plane %J Matematičeskie zametki %D 1989 %P 101-103 %V 45 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1989_45_6_a13/ %G ru %F MZM_1989_45_6_a13