@article{1183414352, author = {Haskell, M. W.}, title = {On the introduction of the notion of hyperbolic functions}, journal = {Bull. Amer. Math. Soc.}, volume = {2}, number = {3}, year = {1895}, pages = { 155-159}, language = {en}, url = {http://dml.mathdoc.fr/item/1183414352} }
Haskell, M. W. On the introduction of the notion of hyperbolic functions. Bull. Amer. Math. Soc., Tome 2 (1895) no. 3, pp. 155-159. http://gdmltest.u-ga.fr/item/1183414352/