@article{GDZPPN002250497, title = {Zur Theorie der Hesse'schen Determinante}, journal = {Mathematische Annalen}, volume = {30}, year = {1887}, pages = {418-424}, zbl = {19.0150.01}, url = {http://dml.mathdoc.fr/item/GDZPPN002250497} }
Voss. Zur Theorie der Hesse'schen Determinante. Mathematische Annalen, Tome 30 (1887) pp. 418-424. http://gdmltest.u-ga.fr/item/GDZPPN002250497/