%0 Journal Article %T Trace Functions in the Ring of Fractions of Polycyclic Group Rings, II %J Canadian journal of mathematics %D 1997 %P 788-797 %V 49 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1997-039-1/ %R 10.4153/CJM-1997-039-1 %F 10_4153_CJM_1997_039_1