@article{1225113603, author = {SATO, Hiroki}, title = {J\o rgensen's inequality for classical Schottky groups of real type}, journal = {J. Math. Soc. Japan}, volume = {50}, number = {4}, year = {1998}, pages = { 945-968}, language = {en}, url = {http://dml.mathdoc.fr/item/1225113603} }
SATO, Hiroki. Jørgensen's inequality for classical Schottky groups of real type. J. Math. Soc. Japan, Tome 50 (1998) no. 4, pp. 945-968. http://gdmltest.u-ga.fr/item/1225113603/