Commonwealth v. Whitaker , 461 Pa. 407 ( 1975 )
Commonwealth v. Garvin , 448 Pa. 258 ( 1972 )
Commonwealth v. Wideman , 460 Pa. 699 ( 1975 )
Commonwealth v. Kichline , 468 Pa. 265 ( 1976 )
Davis v. Mississippi , 89 S. Ct. 1394 ( 1969 )