TY  - JOUR
AU  - M. Sh. Birman
TI  - The discrete spectrum of the periodic Schr\"odinger operator perturbed by a decreasing potential
JO  - Algebra i analiz
PY  - 1996
SP  - 3
EP  - 20
VL  - 8
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_1996_8_1_a0/
LA  - ru
ID  - AA_1996_8_1_a0
ER  -