@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/}
}