TY  - JOUR
AU  - I. A. Sheipak
TI  - On~the basis properties of systems of root vectors of operators that are almost self-adjoint in Pontryagin spaces
JO  - Matematičeskie zametki
PY  - 1995
SP  - 937
EP  - 940
VL  - 57
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1995_57_6_a16/
LA  - ru
ID  - MZM_1995_57_6_a16
ER  -