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@article{MAN_1979__239_163206, author = {Kazuyuki Hatada}, title = {Eigenvalues of {Hecke} {Operators} on {SL(2,Z).}}, journal = {Mathematische Annalen}, pages = {75--96}, publisher = {mathdoc}, volume = {239}, year = {1979}, zbl = {0377.10016}, url = {http://geodesic.mathdoc.fr/item/MAN_1979__239_163206/} }
Kazuyuki Hatada. Eigenvalues of Hecke Operators on SL(2,Z).. Mathematische Annalen, Tome 239 (1979), pp. 75-96. http://geodesic.mathdoc.fr/item/MAN_1979__239_163206/