A Al-Ali, Ahmed. “Evaluation of Compressive Strength for Refractory Casts Made from Different Investment Materials”. Al-Rafidain Dental Journal 7, no. 2 (June 1, 2007): 166–172. Accessed January 11, 2026. https://rden.uomosul.edu.iq/index.php/rden/article/view/34641.