Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc. , 104 S. Ct. 2778 ( 1984 )
Hodel v. Virginia Surface Mining & Reclamation Assn., Inc. , 101 S. Ct. 2352 ( 1981 )
Udall v. Tallman , 85 S. Ct. 792 ( 1965 )