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@article{IM_1983__71_142983, author = {Gopal Prasad and M.S. Raghunathan}, title = {On the {Congruence} {Subgroups} {Problem:} {Determination} of the}, journal = {Inventiones mathematicae}, pages = {21--42}, publisher = {mathdoc}, volume = {71}, year = {1983}, zbl = {0517.20021}, url = {http://geodesic.mathdoc.fr/item/IM_1983__71_142983/} }
Gopal Prasad; M.S. Raghunathan. On the Congruence Subgroups Problem: Determination of the. Inventiones mathematicae, Tome 71 (1983), pp. 21-42. http://geodesic.mathdoc.fr/item/IM_1983__71_142983/