TY  - JOUR
AU  - V. I. Khrabustovskii
TI  - The discrete spectrum of perturbed differential operators of arbitrary order with periodic matrix coefficients
JO  - Matematičeskie zametki
PY  - 1977
SP  - 829
EP  - 838
VL  - 21
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1977_21_6_a9/
LA  - ru
ID  - MZM_1977_21_6_a9
ER  -