%0 Journal Article %A Kenneth Hardy %A Kenneth Williams %T A congruence relating to class number of complex quadratic fields %J Acta Arithmetica %D 1986 %P 263-276 %V 47 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-47-3-263-276/ %R 10.4064/aa-47-3-263-276 %G en %F 10_4064_aa_47_3_263_276