A. Choupani Dastgerdi ‎, M. Navabi, L. Hafezi ‎, Z. Khalilak ‎, and V. Rakhshan ‎, “Anatomy of Permanent‎ ‎Mandibular‎ First‎ Molars in a Selected Iranian Population Using ‎Cone-beam Computed Tomography”, Iran Endod J, vol. 13, no. 2, pp. 251–256, Apr. 2018.