Celotex Corp. v. Catrett, Administratrix of the Estate of Catrett , 106 S. Ct. 2548 ( 1986 )
Price Waterhouse v. Hopkins , 109 S. Ct. 1775 ( 1989 )
Kolstad v. American Dental Assn. , 119 S. Ct. 2118 ( 1999 )