%0 Journal Article %A M. Burger %A A. Valette %T Idempotents in Complex Group Rings: Theorems of Zalesskii and Bass Revisited %J Journal of Lie theory %D 1998 %P 219-228 %V 8 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_1998_8_2_a2/ %F JLT_1998_8_2_a2