%0 Journal Article %A Craig Cordes %T Quadratic forms over fields with four quaternion algebras %J Acta Arithmetica %D 1982 %P 55-70 %V 41 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-41-1-55-70/ %R 10.4064/aa-41-1-55-70 %G en %F 10_4064_aa_41_1_55_70