%0 Journal Article %A M. Lorenz %T The rank of G0 for polycyclic group algebras %J Banach Center Publications %D 1990 %P 45-53 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/-26-1-45-53/ %R 10.4064/-26-1-45-53 %G en %F 10_4064__26_1_45_53