@article{JRAM_1892__109_148839,
     author = {Max Simon},
     title = {Die {Trignometrie} in der absoluten {Geometrie.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {187--198},
     publisher = {mathdoc},
     volume = {109},
     year = {1892},
     zbl = {24.0503.03},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1892__109_148839/}
}