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@article{IM_1986__85_143360, author = {M.S. Raghunathan}, title = {On the congruence subgroup problem, {II.}}, journal = {Inventiones mathematicae}, pages = {73--118}, publisher = {mathdoc}, volume = {85}, year = {1986}, zbl = {0603.20044}, url = {http://geodesic.mathdoc.fr/item/IM_1986__85_143360/} }
M.S. Raghunathan. On the congruence subgroup problem, II.. Inventiones mathematicae, Tome 85 (1986), pp. 73-118. http://geodesic.mathdoc.fr/item/IM_1986__85_143360/