@article{MAN_1894__44_157720,
     author = {E. Fricke},
     title = {Die {Kreisbogenvierseite} und das {Princip} der {Symmetrie}},
     journal = {Mathematische Annalen},
     pages = {565--599},
     publisher = {mathdoc},
     volume = {44},
     year = {1894},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1894__44_157720/}
}