@article{01423414, title = {Smooth classification of Cartan actions of higher rank semisimple Lie groups and their lattices.}, journal = {Annals of Mathematics. Second Series}, volume = {150}, year = {1999}, pages = {743-773}, doi = {10.2307/121055}, zbl = {0940.22011}, language = {en}, url = {http://dml.mathdoc.fr/item/01423414} }
Goetze, Edward R.; Spatzier, Ralf J. Smooth classification of Cartan actions of higher rank semisimple Lie groups and their lattices.. Annals of Mathematics. Second Series, Tome 150 (1999) pp. 743-773. doi : 10.2307/121055. http://gdmltest.u-ga.fr/item/01423414/