TY - JOUR TI - Units in Group Rings of the Infinite Dihedral Group JO - Canadian mathematical bulletin PY - 1991 SP - 83 EP - 89 VL - 34 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-013-4/ DO - 10.4153/CMB-1991-013-4 ID - 10_4153_CMB_1991_013_4 ER -