Linda S. Thompson v. Louis W. Sullivan, M.D., Secretary of Health & Human Services , 987 F.2d 1482 ( 1993 )
Sharon N. RAGLAND, Plaintiff-Appellant, v. Donna E. SHALALA, Secretary of Health and Human Services, Defendant-Appellee , 992 F.2d 1056 ( 1993 )
Richardson v. Perales , 91 S. Ct. 1420 ( 1971 )