%0 Journal Article %A K.-H. Neeb %A D. Mittenhuber %T On the Exponential Function of an Invariant Lie Semigroup %J Journal of Lie Theory %D 1992 %P 21-30 %V 2 %N 1 %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.28/ %R 10.5802/jolt.28 %F JOLT_1992_2_1_a2