@article{MAN_1880__17_156920,
     author = {in Cambridge. Cayley},
     title = {On a theorem relating to the {Multiple} {Thetafunctions}},
     journal = {Mathematische Annalen},
     pages = {115--122},
     year = {1880},
     volume = {17},
     zbl = {12.0382.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1880__17_156920/}
}