%0 Journal Article
%A Hardy, John
%T A note on the representability of quaternary quadratic forms as sums of squares of two linear forms
%J Portugaliae mathematica
%D 1970
%P 161-164
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1970__29_3_115123/
%G en
%F PORMA_1970__29_3_115123