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@article{JRAM_1879__87_148404, author = {A. Cayley}, title = {On the double ...-functions.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {74--81}, publisher = {mathdoc}, volume = {87}, year = {1879}, zbl = {11.0322.02}, url = {http://geodesic.mathdoc.fr/item/JRAM_1879__87_148404/} }
A. Cayley. On the double ...-functions.. Journal für die reine und angewandte Mathematik, Tome 87 (1879), pp. 74-81. http://geodesic.mathdoc.fr/item/JRAM_1879__87_148404/