@article{GDZPPN00224568X, title = {On a theorem relating to the Multiple Thetafunctions}, journal = {Mathematische Annalen}, volume = {16}, year = {1880}, pages = {115-122}, zbl = {12.0382.01}, url = {http://dml.mathdoc.fr/item/GDZPPN00224568X} }
Cayley, in Cambridge. On a theorem relating to the Multiple Thetafunctions. Mathematische Annalen, Tome 16 (1880) pp. 115-122. http://gdmltest.u-ga.fr/item/GDZPPN00224568X/