%0 Journal Article %T Units in Group Rings of the Infinite Dihedral Group %J Canadian mathematical bulletin %D 1991 %P 83-89 %V 34 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-013-4/ %R 10.4153/CMB-1991-013-4 %F 10_4153_CMB_1991_013_4