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@article{BNYMS_1891__1_186460, author = {Thomas S. Fiske}, title = {On the {Doubly} {Infinite} {Products.}}, journal = {Bulletin of the New York Mathematical Society}, pages = {61--66}, publisher = {mathdoc}, volume = {1}, year = {1891}, zbl = {23.0037.03}, url = {http://geodesic.mathdoc.fr/item/BNYMS_1891__1_186460/} }
Thomas S. Fiske. On the Doubly Infinite Products.. Bulletin of the New York Mathematical Society, Tome 1 (1891), pp. 61-66. http://geodesic.mathdoc.fr/item/BNYMS_1891__1_186460/