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@article{AM2_1984__27_137033, author = {Hiroshi Haruki}, title = {On a functional equation for {Jacobi's} elliptic function cn(z; k).}, journal = {Aequationes mathematicae}, pages = {317--321}, publisher = {mathdoc}, volume = {27}, year = {1984}, zbl = {0546.33001}, url = {http://geodesic.mathdoc.fr/item/AM2_1984__27_137033/} }
Hiroshi Haruki. On a functional equation for Jacobi's elliptic function cn(z; k).. Aequationes mathematicae, Tome 27 (1984), pp. 317-321. http://geodesic.mathdoc.fr/item/AM2_1984__27_137033/