Cleveland Board of Education v. Loudermill , 105 S. Ct. 1487 ( 1985 )
Celotex Corp. v. Catrett, Administratrix of the Estate of Catrett , 106 S. Ct. 2548 ( 1986 )
O'CONNOR v. Ortega , 107 S. Ct. 1492 ( 1987 )