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@article{MM2_1981__34_154778, author = {Kazuyuki Hatada}, title = {Congruences for {Eigenvalues} of {Hecke} {Operators} on {SL2(Z).}}, journal = {Manuscripta mathematica}, pages = {305--326}, publisher = {mathdoc}, volume = {34}, year = {1981}, zbl = {0462.10017}, url = {http://geodesic.mathdoc.fr/item/MM2_1981__34_154778/} }
Kazuyuki Hatada. Congruences for Eigenvalues of Hecke Operators on SL2(Z).. Manuscripta mathematica, Tome 34 (1981), pp. 305-326. http://geodesic.mathdoc.fr/item/MM2_1981__34_154778/