Commonwealth v. Hackett , 598 Pa. 350 ( 2008 )
Shelly Enterprises, Inc. v. Guadagnini , 20 A.3d 491 ( 2011 )
Commonwealth v. Patterson , 931 A.2d 710 ( 2007 )
Alleyne v. United States , 133 S. Ct. 2151 ( 2013 )