TY  - JOUR
AU  - M. G. Krein
TI  - A new application of the fixed-point principle in the theory of operators in a space with indefinite metric
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 1023
EP  - 1026
VL  - 154
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_154_5_a4/
LA  - ru
ID  - DAN_1964_154_5_a4
ER  -