TY  - JOUR
AU  - M. Sh. Birman
TI  - A local criterion for the existence of wave operators
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 485
EP  - 488
VL  - 159
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_159_3_a2/
LA  - ru
ID  - DAN_1964_159_3_a2
ER  -