%0 Journal Article %A Ewa Tyszkowska %T On $pq$-hyperelliptic Riemann surfaces %J Colloquium Mathematicum %D 2005 %P 115-120 %V 103 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm103-1-12/ %R 10.4064/cm103-1-12 %G fr %F 10_4064_cm103_1_12