@article{JRAM_1863__61_147866,
     author = {A. Clebsch},
     title = {Ueber das {Pfaffsche} {Problem.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {146--179},
     publisher = {mathdoc},
     volume = {61},
     year = {1863},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1863__61_147866/}
}