Bernard Lategan, “Is Paul Defending His Apostleship in Galatians: The Function of Galatians 1:11-12 and 2:19-20 in the Development of Paul’s Argument,” NTS 34 (1988) 411-30.
Debbie Hunn, “Christ versus the Law: Issues in Galatians 2:17-28,” CBQ 72 (2010) 537-55.