@article{JRAM_1859__56_147765,
     author = {F. Joachimsthal},
     title = {Ueber ein elementares {Theorem} der analytischen {Geometrie.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {280--284},
     year = {1859},
     volume = {56},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1859__56_147765/}
}