Wantana, N., Insiripong, S., Ruangthaweep, Y. and Kaewkhao, J. (2017) “Study on physical, optical and luminescence of Er<sup>3+</sup> in K<sub>2</sub>O-CaO-B<sub>2</sub>O<sub>3</sub> glasses for photonic application”, Journal of Metals, Materials and Minerals. Bangkok, Thailand, 27(1). Available at: http://jmmm.material.chula.ac.th/index.php/jmmm/article/view/328 (Accessed: 2December2021).