%0 Journal Article
%A Juliet Britto
%T On the construction of non-congruence subgroups
%J Acta Arithmetica
%D 1977
%P 261-267
%V 33
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/aa-33-3-261-267/
%R 10.4064/aa-33-3-261-267
%G en
%F 10_4064_aa_33_3_261_267