@article{MAN_1893__41_157625,
     author = {R. Fricke},
     title = {Ueber den arithmetischen {Charakter} der zu den {Verzweigungen} (2, 3, 7) und (2, 4, 7) geh\"orenden {Dreiecksfunctionen.}},
     journal = {Mathematische Annalen},
     pages = {443--468},
     publisher = {mathdoc},
     volume = {41},
     year = {1893},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1893__41_157625/}
}