Elbadry, M., C. Mohsen, and R. Hashem. “Effect of Different Shading Techniques on the Color of Zirconia Ceramic Restoration (An In Vivo Study)”. Open Access Macedonian Journal of Medical Sciences, vol. 10, no. D, Aug. 2022, pp. 372-9, doi:10.3889/oamjms.2022.10237.