United States v. Agurs , 96 S. Ct. 2392 ( 1976 )
Hill v. Lockhart , 106 S. Ct. 366 ( 1985 )
Nix v. Whiteside , 106 S. Ct. 988 ( 1986 )
Strickland v. Washington , 104 S. Ct. 2052 ( 1984 )