TY  - JOUR
AU  - Duggal, B.P.
TI  - A Putnam area inequality for thespectrum of n-tuples ofp-hyponormal operators
JO  - Glasgow mathematical journal
PY  - 1999
SP  - 385
EP  - 391
VL  - 41
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089599000543/
DO  - 10.1017/S0017089599000543
ID  - 10_1017_S0017089599000543
ER  -