@article{01428728,
title = {J\o rgensen's inequality for discrete convergence groups.},
journal = {Annales Academiae Scientiarum Fennicae. Mathematica},
volume = {25},
year = {2000},
pages = {131-150},
zbl = {0945.30035},
language = {en},
url = {http://dml.mathdoc.fr/item/01428728}
}
Bonfert-Taylor, Petra. Jørgensen's inequality for discrete convergence groups.. Annales Academiae Scientiarum Fennicae. Mathematica, Tome 25 (2000) pp. 131-150. http://gdmltest.u-ga.fr/item/01428728/