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@article{PMIHES_1977__47__33_0, author = {Mazur, Barry}, title = {Modular curves and the {Eisenstein} ideal}, journal = {Publications Math\'ematiques de l'IH\'ES}, pages = {33--186}, publisher = {Institut des Hautes \'Etudes Scientifiques}, volume = {47}, year = {1977}, mrnumber = {488287}, zbl = {0394.14008}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PMIHES_1977__47__33_0/} }
Mazur, Barry. Modular curves and the Eisenstein ideal. Publications Mathématiques de l'IHÉS, Tome 47 (1977), pp. 33-186. http://geodesic.mathdoc.fr/item/PMIHES_1977__47__33_0/