%0 Journal Article %A Koprowski, Przemysław %T Graded quaternion symbol equivalence of function fields %J Czechoslovak Mathematical Journal %D 2007 %P 1311-1319 %V 57 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2007__57_4_a12/ %G en %F CMJ_2007__57_4_a12