N. Farhad Molashahi, M. Sohrabi, L. Farhad Molashahi, and M. Mehdizadeh, “The Efficacy of FlexMaster’s IntroFile, PreRaCe and Gates Glidden Drills in Straight-Line Access: A CBCT Assessment”, Iran Endod J, vol. 9, no. 3, pp. 199–203, Jun. 2014.