%0 Journal Article %A Cummins, C.J. %A Pauli, S. %T Congruence subgroups of ) of genus less than or equal to 24. %J Experimental mathematics %D 2003 %P 243-255 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/EXMA_2003__12_2_51227/ %G en %F EXMA_2003__12_2_51227