TY  - JOUR
AU  - M. Sh. Birman
AU  - D. R. Yafaev
TI  - The scattering matrix for a~perturbation of a~periodic Schr\"odinger operator by decreasing potential
JO  - Algebra i analiz
PY  - 1994
SP  - 17
EP  - 39
VL  - 6
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_1994_6_3_a1/
LA  - ru
ID  - AA_1994_6_3_a1
ER  -