@article{MAN_1869__1_156397,
     author = {A. Clebsch and P. Gordan},
     title = {Ueber die {Theorie} der tern\"aren cubischen {Formen.}},
     journal = {Mathematische Annalen},
     pages = {56--89},
     publisher = {mathdoc},
     volume = {1},
     year = {1869},
     zbl = {02.0064.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1869__1_156397/}
}