Independent Voters v. Illinois Commerce Commission , 117 Ill. 2d 90 ( 1987 )
Citizens Utilities Co. v. Illinois Commerce Commission , 124 Ill. 2d 195 ( 1988 )
Mandel Bros. Inc. v. Chicago Tunnel Terminal Co. , 2 Ill. 2d 205 ( 1954 )
Business & Professional People for the Public Interest v. Illinois Commerce Commission , 136 Ill. 2d 192 ( 1990 )