Quader, S. A., M. S. Alam, A. A. Moral, M. Howlader, S. S. Chowdhury, and F. A. Karim. “Compressive Strength of Direct Tooth Colored Restorative Materials”. Update Dental College Journal, vol. 9, no. 2, Oct. 2019, pp. 36-39, doi:10.3329/updcj.v9i2.43738.