@article{02105184,
title = {Modular circle quotients and PL limit sets.},
journal = {Geometry \& Topology},
volume = {8},
year = {2004},
pages = {1-34},
doi = {10.2140/gt.2004.8.1},
zbl = {1109.57024},
language = {en},
url = {http://dml.mathdoc.fr/item/02105184}
}
Schwartz, Richard Evan. Modular circle quotients and PL limit sets.. Geometry & Topology, Tome 8 (2004) pp. 1-34. doi : 10.2140/gt.2004.8.1. http://gdmltest.u-ga.fr/item/02105184/