@article{MAN_1892__40_157601,
     author = {Robert Fricke},
     title = {Neue {Beitr\"age} zur {Transformationstheorie} der elliptischen {Functionen}},
     journal = {Mathematische Annalen},
     pages = {469--502},
     publisher = {mathdoc},
     volume = {40},
     year = {1892},
     zbl = {24.0434.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1892__40_157601/}
}