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@article{JRAM_1961__207_150490, author = {Eckford Cohen}, title = {On the {Inversion} of {Even} {Functions} of {Finite} {Abelian} {Groups} (mod {H).}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {192--202}, publisher = {mathdoc}, volume = {207}, year = {1961}, zbl = {0121.03204}, url = {http://geodesic.mathdoc.fr/item/JRAM_1961__207_150490/} }
Eckford Cohen. On the Inversion of Even Functions of Finite Abelian Groups (mod H).. Journal für die reine und angewandte Mathematik, Tome 207 (1961), pp. 192-202. http://geodesic.mathdoc.fr/item/JRAM_1961__207_150490/