%0 Journal Article %A John Hunsucker %T Primitive representation of a binary quadratic form as a sum of four squares %J Acta Arithmetica %D 1971 %P 321-325 %V 19 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-19-4-321-325/ %R 10.4064/aa-19-4-321-325 %G en %F 10_4064_aa_19_4_321_325