Wantana, N, Y Ruangtaweep, and J Kaewkhao. “Thermal Correction Judd-Ofelt Analyze of Eu<sup>3+</sup> Ion Doped Calcium Gadolinium Silicoborate Oxyfluoride Glass”. Journal of Metals, Materials and Minerals 29, no. 1 (March 29, 2019). Accessed December 2, 2021. http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/438.