Ting, M. L., K. L. Chin, H. K. Jun, C. H. Ting, C. K. Ng, and S. Ramesh. “The Influence of Manganese Oxide on the Densification and Mechanical Properties of 3Y-TZP Ceramics”. Applied Science and Engineering Progress, vol. 13, no. 3, July 2020, pp. 268-73, https://ph02.tci-thaijo.org/index.php/ijast/article/view/241546.