%0 Journal Article %A L. J., Mordell %T On the representation of a binary quadratic form as a sum of squares of linear forms %J Mathematische Zeitschrift %D 1932 %P 1-15 %V 35 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1932__35_168340/ %F MZ_1932__35_168340