TY  - JOUR
AU  - M. G. Krein
AU  - Yu. L. Shmul'yan
TI  - A class of operators in a space with an indefinite metric
JO  - Doklady Akademii Nauk
PY  - 1966
SP  - 34
EP  - 37
VL  - 170
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1966_170_1_a7/
LA  - ru
ID  - DAN_1966_170_1_a7
ER  -