TY  - JOUR
AU  - Crabb, M. J.
AU  - McGregor, C. M.
TI  - Numerical ranges of powers of hermitian elements
JO  - Glasgow mathematical journal
PY  - 1986
SP  - 37
EP  - 45
VL  - 28
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006315/
DO  - 10.1017/S0017089500006315
ID  - 10_1017_S0017089500006315
ER  -