@article{1270042117, author = {SUNAGA, Jun-ichi}, title = {Some Arithmetic Fuchsian Groups with Signature $(0;e\_1,e\_2,e\_3,e\_4)$}, journal = {Tokyo J. of Math.}, volume = {20}, number = {2}, year = {1997}, pages = { 435-451}, language = {en}, url = {http://dml.mathdoc.fr/item/1270042117} }
SUNAGA, Jun-ichi. Some Arithmetic Fuchsian Groups with Signature $(0;e_1,e_2,e_3,e_4)$. Tokyo J. of Math., Tome 20 (1997) no. 2, pp. 435-451. http://gdmltest.u-ga.fr/item/1270042117/