Southwestern Bell Telephone Co. v. Public Utility Commission , 571 S.W.2d 503 ( 1978 )
Pub. Util. Com'n v. Gte-Southwest , 901 S.W.2d 401 ( 1995 )
Cities for Fair Utility Rates v. Public Utility Commission , 884 S.W.2d 540 ( 1994 )