@article{GDZPPN00224067X, title = {Zur Theorie des Potentiales}, journal = {Mathematische Annalen}, volume = {2}, year = {1870}, pages = {514-514}, zbl = {02.0753.02}, url = {http://dml.mathdoc.fr/item/GDZPPN00224067X} }
Neumann. Zur Theorie des Potentiales. Mathematische Annalen, Tome 2 (1870) p. 514. http://gdmltest.u-ga.fr/item/GDZPPN00224067X/