Vincent Leroy Hephner v. Forest David Mathews, Secretary of Health, Education & Welfare , 574 F.2d 359 ( 1978 )
Hollis McCann v. Joseph A. Califano, Jr., Secretary of Health, Education and Welfare , 621 F.2d 829 ( 1980 )
Richardson v. Perales , 91 S. Ct. 1420 ( 1971 )