Williams v. United States , 112 S. Ct. 1112 ( 1992 )
Burns v. United States , 111 S. Ct. 2182 ( 1991 )
United States v. Christopher Gary , 18 F.3d 1123 ( 1994 )
United States v. Brian Scott Maddox , 48 F.3d 791 ( 1995 )