%0 Journal Article %A John Hardy %T Sums of two squares in a quadratic ring %J Acta Arithmetica %D 1968 %P 357-369 %V 14 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-14-4-357-369/ %R 10.4064/aa-14-4-357-369 %G en %F 10_4064_aa_14_4_357_369