%0 Journal Article %A Nobuhiko Ishida %A Noburo Ishii %T The Equations for Modular Function Fields of Principal congruence subgroups of prime level. %J Manuscripta mathematica %D 1996 %P 271-286 %V 90 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1996__90_2_156193/ %F MM2_1996__90_2_156193