%0 Journal Article %A Jan Nekovár %T Class numbers of quadratic fields and Shimura's correspondence. %J Mathematische Annalen %D 1990 %P 577-594 %V 287 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1990__287_1_164707/ %F MAN_1990__287_1_164707