%0 Journal Article %A Buǐ Ta Long %T Eigenvalues of quadratic operator pencils that are connected with problems of stability %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1989 %P 74-76 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1989_3_a22/ %G ru %F VMUMM_1989_3_a22