City of Wilmer v. Laidlaw Waste System (Dallas), Inc. , 1994 Tex. App. LEXIS 3221 ( 1994 )
Gaines v. Hamman , 163 Tex. 618 ( 1962 )
Vaughn v. Grand Prairie Independent School District , 1989 Tex. App. LEXIS 3249 ( 1989 )