@article{AIHPC_1996__13_1_117_0,
     author = {El Assoudi, R. and Gauthier, J. P. and Kupka, I. A. K.},
     title = {On subsemigroups of semisimple {Lie} groups},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {117--133},
     publisher = {Gauthier-Villars},
     volume = {13},
     number = {1},
     year = {1996},
     mrnumber = {1373474},
     zbl = {0848.93006},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPC_1996__13_1_117_0/}
}