TY  - JOUR
AU  - S.K. BERBERIAN
TI  - Some Conditions on an Operator Implying Normality.
JO  - Mathematische Annalen
PY  - 1970
SP  - 188
EP  - 192
VL  - 184
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1970__184_161921/
ID  - MAN_1970__184_161921
ER  -