Skinner v. Railway Labor Executives' Assn. , 109 S. Ct. 1402 ( 1989 )
National Treasury Employees Union v. Von Raab , 109 S. Ct. 1384 ( 1989 )
AMERICAN FED. OF GOV. EMPLOYEES v. Barr , 794 F. Supp. 1466 ( 1992 )