Humble Oil & Refining Company v. Williams , 11 Tex. Sup. Ct. J. 51 ( 1967 )
Oryx Energy Co. v. Shelton , 1996 Tex. App. LEXIS 5449 ( 1996 )
Getty Oil Company v. Jones , 14 Tex. Sup. Ct. J. 372 ( 1971 )