TY  - JOUR
AU  - G.D. Raikov
TI  - Eigenvalue asymptotics for the Schrödinger operator with perturbed periodic potential.
JO  - Inventiones mathematicae
PY  - 1992
SP  - 75
EP  - 94
VL  - 110
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1992__110_2_144043/
ID  - IM_1992__110_2_144043
ER  -