Khalilak, Z., Vali, T., Danesh, F. and Vatanpour, M. 2011. The effect of one-step or two-step MTA plug and tooth apical width on coronal leakage in open apex teeth. Iranian Endodontic Journal. 7, 1 (Dec. 2011), 10–14. DOI:https://doi.org/10.22037/iej.v7i1.2725.