@article{JRAM_1866__66_147985,
     author = {G. Roch},
     title = {Ueber die {Doppeltangenten} an {Curven} vierter {Ordnung.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {97--120},
     year = {1866},
     volume = {66},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1866__66_147985/}
}