@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/}
}