TY  - JOUR
TI  - Numerical Range and Convex Sets*
JO  - Canadian mathematical bulletin
PY  - 1974
SP  - 295
EP  - 296
VL  - 17
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-058-3/
DO  - 10.4153/CMB-1974-058-3
ID  - 10_4153_CMB_1974_058_3
ER  -