%0 Journal Article %A K.-H. Neeb %T On a Theorem of S. Banach %J Journal of Lie Theory %D 1997 %P 293-300 %V 7 %N 2 %U http://geodesic.mathdoc.fr/item/JOLT_1997_7_2_a10/ %F JOLT_1997_7_2_a10