%0 Journal Article %A Chiang-Hsieh, Hung-Jen %A Yang, Yifan %T Determination of Hauptmoduls and Construction of Abelian Extensions of Quadratic Number Fields %J Canadian mathematical bulletin %D 2007 %P 334-346 %V 50 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2007-032-1/ %R 10.4153/CMB-2007-032-1 %F 10_4153_CMB_2007_032_1