%0 Journal Article %A Cao, Zhenfu %A Dong, Xiaolei %T Diophantine equations and class number of imaginary quadratic fields %J Discussiones Mathematicae. General Algebra and Applications %D 2000 %P 199-206 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2000_20_2_a4/ %G en %F DMGAA_2000_20_2_a4