%0 Journal Article %A J. Hilgert %A K.-H. Neeb %A W. Plank %T Symplectic Convexity Theorems %J Journal of Lie theory %D 1993 %P 123-136 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_1993_3_2_a0/ %F JLT_1993_3_2_a0