Celotex Corp. v. Catrett, Administratrix of the Estate of Catrett , 106 S. Ct. 2548 ( 1986 )
Anderson v. Liberty Lobby, Inc. , 106 S. Ct. 2505 ( 1986 )
Oncale v. Sundowner Offshore Services, Inc. , 118 S. Ct. 998 ( 1998 )