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@article{JRAM_1974__0268_0269_151485, author = {Basil Gordon}, title = {A note on inequivalent {Hadamard} series.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {427--433}, publisher = {mathdoc}, volume = {0268_0269}, year = {1974}, zbl = {0302.05017}, url = {http://geodesic.mathdoc.fr/item/JRAM_1974__0268_0269_151485/} }
Basil Gordon. A note on inequivalent Hadamard series.. Journal für die reine und angewandte Mathematik, 0268_0269 (1974), pp. 427-433. http://geodesic.mathdoc.fr/item/JRAM_1974__0268_0269_151485/