%0 Journal Article %A K. Kh. Boimatov %A A. G. Kostyuchenko %T Spectral asymptotics of polynomial pencils of differential operators %J Matematičeskie zametki %D 1990 %P 129-130 %V 47 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a16/ %G ru %F MZM_1990_47_3_a16