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@article{MAN_1985__273_164068, author = {Svetlana Katok}, title = {Reduction {Theory} for {Fuchsian} {Groups.}}, journal = {Mathematische Annalen}, pages = {461--470}, publisher = {mathdoc}, volume = {273}, year = {1985}, zbl = {0561.30036}, url = {http://geodesic.mathdoc.fr/item/MAN_1985__273_164068/} }
Svetlana Katok. Reduction Theory for Fuchsian Groups.. Mathematische Annalen, Tome 273 (1985), pp. 461-470. http://geodesic.mathdoc.fr/item/MAN_1985__273_164068/