Moradi, S., R. Disfani, K. Ghazvini, and M. Lomee. “Sealing Ability of Orthograde MTA and CEM Cement in Apically Resected Roots Using Bacterial Leakage Method”. Iranian Endodontic Journal, vol. 8, no. 3, July 2013, pp. 109-13, doi:10.22037/iej.v8i3.3589.