Adl, A., Sobhnamayan, F., Sadat Shojaee, N., Tahmasebi Azad, F. and Bahmani, M. (2017) “Effect of Propylene Glycol on the Sealing Ability of Mineral Trioxide Aggregate and Calcium-Enriched Mixture Cement Apical Barriers”, Iranian Endodontic Journal, 12(3), pp. 318–322. doi: 10.22037/iej.v12i3.15670.