%0 Journal Article %A D. M. Polyakov %T On the Spectral Characteristics of Non-Self-Adjoint Fourth-Order Operators with Matrix Coefficients %J Matematičeskie zametki %D 2019 %P 637-642 %V 105 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2019_105_4_a13/ %G ru %F MZM_2019_105_4_a13