@article{GDZPPN002415739,
title = {A Modular Group and Riemann Surfaces of Genus 2.},
journal = {Mathematische Zeitschrift},
volume = {142},
year = {1975},
pages = {205-220},
zbl = {0286.32016},
url = {http://dml.mathdoc.fr/item/GDZPPN002415739}
}
Keen, Linda. A Modular Group and Riemann Surfaces of Genus 2.. Mathematische Zeitschrift, Tome 142 (1975) pp. 205-220. http://gdmltest.u-ga.fr/item/GDZPPN002415739/