@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/