TY  - JOUR
AU  - È. F. Akhmerova
TI  - Asymptotics of the Spectrum of Nonsmooth Perturbations of Differential Operators of Order $2m$
JO  - Matematičeskie zametki
PY  - 2011
SP  - 833
EP  - 844
VL  - 90
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2011_90_6_a2/
LA  - ru
ID  - MZM_2011_90_6_a2
ER  -