%0 Journal Article
%A V. I. Khrabustovskii
%T The discrete spectrum of perturbed differential operators of arbitrary order with periodic matrix coefficients
%J Matematičeskie zametki
%D 1977
%P 829-838
%V 21
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1977_21_6_a9/
%G ru
%F MZM_1977_21_6_a9