Jearnkulprasert, Ngarmjit, Onanong Chaemlek, Nuantip Wantana, and J Kaewkhao. “Physical Optical Properties of 20CaO-(80-x)B2O3-XZnO Glass System”. Journal of Metals, Materials and Minerals 27, no. 2 (June 25, 2018). Accessed April 21, 2024. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/330.