TY  - JOUR
AU  - Shmuel Kantorovitz
TI  - Characterization of unbounded spectral operators with spectrum in a half-line.
JO  - Commentarii mathematici Helvetici
PY  - 1981
SP  - 163
EP  - 178
VL  - 56
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1981__56_139865/
ID  - CMH_1981__56_139865
ER  -