@article{GDZPPN002243091, title = {Ueber bin\"are Formen, welche Polaren einer Form sind}, journal = {Mathematische Annalen}, volume = {8}, year = {1875}, pages = {444-452}, language = {de}, url = {http://dml.mathdoc.fr/item/GDZPPN002243091} }
Wiederhold. Ueber binäre Formen, welche Polaren einer Form sind. Mathematische Annalen, Tome 8 (1875) pp. 444-452. http://gdmltest.u-ga.fr/item/GDZPPN002243091/