@article{GDZPPN002157632,
title = {On the addition of the double ...-functions.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {88},
year = {1879},
pages = {74-81},
zbl = {11.0322.03},
url = {http://dml.mathdoc.fr/item/GDZPPN002157632}
}
Cayley, A. On the addition of the double ...-functions.. Journal für die reine und angewandte Mathematik, Tome 88 (1879) pp. 74-81. http://gdmltest.u-ga.fr/item/GDZPPN002157632/