Yasaka, P., Y. Yamsuk, J. Kaewkhao, and N. Sangwaranateec. “Spectroscopy Characteristics of Eu3+ Doped Zinc Barium Tellurite Oxyfluoride Glasses for Laser Materials”. Interdisciplinary Research Review, vol. 14, no. 2, May 2019, pp. 44-47, https://ph02.tci-thaijo.org/index.php/jtir/article/view/189742.