%0 Journal Article %A Ulf Rehmann %A Jun Morita %T Symplectic K2 of Laurent polynomials, associated Kac-Moody groups and Witt rings. %J Mathematische Zeitschrift %D 1991 %P 57-66 %V 206 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1991__206_1_174206/ %F MZ_1991__206_1_174206