TY  - JOUR
AU  - L. A. Sakhnovich
TI  - The invariance principle for generalized wave operators
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1971
SP  - 61
EP  - 68
VL  - 5
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1971_5_1_a6/
LA  - ru
ID  - FAA_1971_5_1_a6
ER  -