Rajagukguk, Juniastel, Lia Yuliantini, Fitrilawati Fitrilawati, Mitra Djamal, and Jakrapong Kaewkhao. “Investigation of Dy3+ Ion Doped Borate Glasses and Their Potential for WLED and Laser Application”. Journal of Engineering and Technological Sciences 52, no. 6 (November 30, 2020): 891-906. Accessed December 4, 2023. https://journals.itb.ac.id/index.php/jets/article/view/12759.