People v. Friedman , 79 Ill. 2d 341 ( 1980 )
People v. Campbell , 146 Ill. 2d 363 ( 1992 )
The PEOPLE v. Green , 42 Ill. 2d 555 ( 1969 )
People v. West , 137 Ill. 2d 558 ( 1990 )