TY  - JOUR
AU  - Zoltán Sasvári
AU  - Heinz Langer
TI  - Definitizing polynomials of unitary and Hermitian operators in Pontrjagin spaces.
JO  - Mathematische Annalen
PY  - 1990
SP  - 231
EP  - 244
VL  - 288
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164734/
ID  - MAN_1990__288_1_164734
ER  -