%0 Journal Article
%A Nobuhiko Ishida
%A Noburo Ishii
%T Generators and defining equation of the
modular function field of the group ${\mit\Gamma }_1(N)$
%J Acta Arithmetica
%D 2002
%P 303-320
%V 101
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/aa101-4-1/
%R 10.4064/aa101-4-1
%G en
%F 10_4064_aa101_4_1