%0 Journal Article %A Jacek PomykaƂa %T On $q$-orders in primitive modular groups %J Acta Arithmetica %D 2014 %P 397-404 %V 166 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa166-4-5/ %R 10.4064/aa166-4-5 %G en %F 10_4064_aa166_4_5