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@article{JRAM_1995__473_153805, author = {Daan Krammer}, title = {An example of an arithmetic {Fuchsian} group.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {69--86}, publisher = {mathdoc}, volume = {473}, year = {1995}, zbl = {0846.12004}, url = {http://geodesic.mathdoc.fr/item/JRAM_1995__473_153805/} }
Daan Krammer. An example of an arithmetic Fuchsian group.. Journal für die reine und angewandte Mathematik, Tome 473 (1995), pp. 69-86. http://geodesic.mathdoc.fr/item/JRAM_1995__473_153805/