@article{JRAM_1853__45_147536,
     author = {K. Schellbach},
     title = {Mathematische {Miszellen.} {VI.} {\"Uber} den {Kr\"ummungshalbmesser.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {265--266},
     year = {1853},
     volume = {45},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1853__45_147536/}
}