Jafarzadeh, Hamid, Masoud Beyrami, and Maryam Forghani. 2016. “Evaluation of Conventional Radiography and an Electronic Apex Locator in Determining the Working Length in C-Shaped Canals”. Iranian Endodontic Journal 12 (1):60-63. https://doi.org/10.22037/iej.v12i1.11978.