%0 Journal Article
%A Hartley, B.
%A Pickel, P. F.
%T Free Subgroups in the Unit Groups of Integral Group Rings
%J Canadian journal of mathematics
%D 1980
%P 1342-1352
%V 32
%N 6
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1980-104-3/
%R 10.4153/CJM-1980-104-3
%F 10_4153_CJM_1980_104_3