@article{JRAM_1879__87_148408,
     author = {A. Cayley},
     title = {On the triple ...-functions.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {134--138},
     publisher = {mathdoc},
     volume = {87},
     year = {1879},
     zbl = {11.0324.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1879__87_148408/}
}