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@article{JLT_1992_2_1_a2, author = {K.-H. Neeb and D. Mittenhuber}, title = {On the {Exponential} {Function} of an {Invariant} {Lie} {Semigroup}}, journal = {Journal of Lie theory}, pages = {021--03}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1992}, url = {http://geodesic.mathdoc.fr/item/JLT_1992_2_1_a2/} }
K.-H. Neeb; D. Mittenhuber. On the Exponential Function of an Invariant Lie Semigroup. Journal of Lie theory, Tome 2 (1992) no. 1, pp. 021-03. http://geodesic.mathdoc.fr/item/JLT_1992_2_1_a2/