%0 Journal Article %A Bass, Hyman %A Milnor, John %A Serre, Jean-Pierre %T Solution of the congruence subgroup problem for $SL_n (n \ge 3)$ and $Sp_{2n} (n \ge 2)$ %J Publications Mathématiques de l'IHÉS %D 1967 %P 59-137 %V 33 %I Institut des Hautes Études Scientifiques %U http://archive.numdam.org/item/PMIHES_1967__33__59_0/ %G en %F PMIHES_1967__33__59_0