%0 Journal Article %A Magajna, Bojan %T C*-Convexity and the Numerical Range %J Canadian mathematical bulletin %D 2000 %P 193-207 %V 43 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2000-027-3/ %R 10.4153/CMB-2000-027-3 %F 10_4153_CMB_2000_027_3