Z. sadat Madani, D. Goudarzipour, A. Haddadi, A. Saeidi, and A. Bijani, “A CBCT Assessment of Apical Transportation in Root Canals Prepared with Hand K-Flexofile and K3 Rotary Instruments”, Iran Endod J, vol. 10, no. 1, pp. 44–48, Dec. 2014.