%0 Journal Article %A Leon E. Mattics %T Quadratic Spaces of Countable Dimension over Algebraic Number Fields. %J Commentarii mathematici Helvetici %D 1968 %P 31-40 %V 43 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1968__43_139350/ %F CMH_1968__43_139350