%0 Journal Article
%A Gopal Prasad
%A M.S. Raghunathan
%T On the Congruence Subgroups Problem: Determination of the 
%J Inventiones mathematicae
%D 1983
%P 21-42
%V 71
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1983__71_142983/
%F IM_1983__71_142983