@article{1183486689,
author = {Ford, L. R.},
title = {The fundamental region for a Fuchsian group},
journal = {Bull. Amer. Math. Soc.},
volume = {31},
number = {9-10},
year = {1925},
pages = { 531-539},
language = {en},
url = {http://dml.mathdoc.fr/item/1183486689}
}
Ford, L. R. The fundamental region for a Fuchsian group. Bull. Amer. Math. Soc., Tome 31 (1925) no. 9-10, pp. 531-539. http://gdmltest.u-ga.fr/item/1183486689/