Zaki, D. Y., M. H. Zaazou, M. E. Khallaf, and T. M. Hamdy. “In Vivo Comparative Evaluation of Periapical Healing in Response to a Calcium Silicate and Calcium Hydroxide Based Endodontic Sealers”. Open Access Macedonian Journal of Medical Sciences, vol. 6, no. 8, Aug. 2018, pp. 1475-9, doi:10.3889/oamjms.2018.293.