Baugh D, Wallace JA.  Middle Mesial Canal of the Mandibular First Molar:  A Case Report and Literature Review. Journal of Endodontics, March 2004, 30:3.

Baugh D, Wallace JA. The Role of Apical Instrumentation in Root Canal Treatment:  A Review of the Literature.  JOE Volume 31, Number 5, May 2005.