F. Mohammadian, A. Sadeghi, F. Dibaji, M. Sadegh, Z. Ghoncheh, and M. J. Kharrazifard, “Comparison of Apical Transportation with the Use of Rotary System and Reciprocating Handpiece with Precurved Hand Files: An In Vitro Study”, Iran Endod J, vol. 12, no. 4, pp. 462–467, Oct. 2017.