Ellen Melville v. Kenneth S. Apfel, Commissioner of Social Security , 198 F.3d 45 ( 1999 )
Maria TEJADA, Plaintiff-Appellant, v. Kenneth S. APFEL, Commissioner of Social Security, Defendant-Appellee , 167 F.3d 770 ( 1999 )
Richardson v. Perales , 91 S. Ct. 1420 ( 1971 )