@article{GDZPPN002106612, title = {A rigidity theorem for M\"obius groups.}, journal = {Inventiones mathematicae}, volume = {96}, year = {1989}, pages = {405-432}, zbl = {0674.30038}, url = {http://dml.mathdoc.fr/item/GDZPPN002106612} }
Tukia, P. A rigidity theorem for Möbius groups.. Inventiones mathematicae, Tome 96 (1989) pp. 405-432. http://gdmltest.u-ga.fr/item/GDZPPN002106612/