Samimi, Pouran, Sara Kaveh, and Maryam Khoroushi. “Effect of Delayed Light-Curing Through a Zirconia Disc on Microhardness and Fracture Toughness of Two Types of Dual-Cure Cement”. Frontiers in Dentistry 15, no. 6 (November 28, 2018): 339-350. Accessed September 20, 2019. http://jdt.tums.ac.ir/index.php/jdt/article/view/2377.