%0 Journal Article %A A. S. Lewis %T The Convex Analysis of Unitarily Invariant Matrix Functions %J Journal of convex analysis %D 1995 %P 173-184 %V 2 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_1995_2_1-2_a11/ %F JCA_1995_2_1-2_a11