%0 Journal Article %A Martin Krüskemper %T Algebraic systems of quadratic forms of number fields and function fields. %J Manuscripta mathematica %D 1989 %P 225-244 %V 65 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1989__65_3_155436/ %F MM2_1989__65_3_155436