%0 Journal Article %A Williamson, Alan %T On the Conjugacy Classes in an Integral Group Ring %J Canadian mathematical bulletin %D 1978 %P 491-496 %V 21 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-083-8/ %R 10.4153/CMB-1978-083-8 %F 10_4153_CMB_1978_083_8