Nikitakis, N.G. Brooks, J.K. Melakopoulos, I. Younis, R.H. Scheper, M.A. Pitts, M.A. Al-Mubarak, H. Sklavounou, A., Lateral periodontal cysts arising in periapical sites: A report of two cases, JOURNAL  OF  ENDODONTICS, (36), 1707-1711, 2010, 0099-2399