@article{JRAM_1895__114_148935,
     author = {E. Busche},
     title = {Ueber den {Dreiecksinhalt} und sein duales {Analogon.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--24},
     publisher = {mathdoc},
     volume = {114},
     year = {1895},
     zbl = {25.1066.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1895__114_148935/}
}