%0 Journal Article %A Jordi Quer %T Dimensions of spaces of modular forms for $\Gamma _H(N)$ %J Acta Arithmetica %D 2010 %P 373-395 %V 145 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa145-4-4/ %R 10.4064/aa145-4-4 %G en %F 10_4064_aa145_4_4