@article{GDZPPN002064286,
title = {Zu einem hyperbolischen Gitterpunktproblem.},
journal = {Commentarii mathematici Helvetici},
volume = {56},
year = {1981},
pages = {240-271},
zbl = {0461.10023},
url = {http://dml.mathdoc.fr/item/GDZPPN002064286}
}
Thurnheer, Peter. Zu einem hyperbolischen Gitterpunktproblem.. Commentarii mathematici Helvetici, Tome 56 (1981) pp. 240-271. http://gdmltest.u-ga.fr/item/GDZPPN002064286/