Gholami, Fatemeh, et al. “Effect of Nickel-Chromium and Non-Precious Gold Color Alloy Cast Posts on Fracture Resistance of Endodontically Treated Teeth”. Iranian Endodontic Journal, vol. 12, no. 3, July 2017, pp. 303-6, doi:10.22037/iej.v12i3.10586.