TY - JOUR AU - Gonçalves, Jairo Zacarias TI - Free Subgroups and the Residual Nilpotence of the Group of Units of Modular and p-Adic Group Rings JO - Canadian mathematical bulletin PY - 1986 SP - 321 EP - 328 VL - 29 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-049-x/ DO - 10.4153/CMB-1986-049-x ID - 10_4153_CMB_1986_049_x ER -