Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc. , 104 S. Ct. 2778 ( 1984 )
Skidmore v. Swift & Co. , 65 S. Ct. 161 ( 1944 )
Morton v. Ruiz , 94 S. Ct. 1055 ( 1974 )
Udall v. Tallman , 85 S. Ct. 792 ( 1965 )