@article{GDZPPN002243784, title = {On the theory of Partial Differential Equations}, journal = {Mathematische Annalen}, volume = {12}, year = {1877}, pages = {194-198}, zbl = {09.0259.01}, url = {http://dml.mathdoc.fr/item/GDZPPN002243784} }
Cayley. On the theory of Partial Differential Equations. Mathematische Annalen, Tome 12 (1877) pp. 194-198. http://gdmltest.u-ga.fr/item/GDZPPN002243784/