TY  - JOUR
AU  - D. I. Borisov
AU  - R. R. Gadyl'shin
TI  - On the spectrum of a~periodic operator with a~small localized perturbation
JO  - Izvestiya. Mathematics 
PY  - 2008
SP  - 659
EP  - 688
VL  - 72
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2008_72_4_a2/
LA  - en
ID  - IM2_2008_72_4_a2
ER  -