TY  - JOUR
AU  - V. A. Khatskevich
TI  - An application of the contraction mapping principle in the theory of operators in an indefinite metric space
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1978
SP  - 88
EP  - 89
VL  - 12
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1978_12_1_a18/
LA  - ru
ID  - FAA_1978_12_1_a18
ER  -