TY  - JOUR
AU  - M. Sh. Birman
TI  - On a test for the existence of wave operators
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 1008
EP  - 1009
VL  - 147
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_147_5_a3/
LA  - ru
ID  - DAN_1962_147_5_a3
ER  -