Kaur, Sandeep. “Effect of SiO2 and Al2O3 on the Spectroscopic and Thermal Properties of Bismuth Borate Glasses”. Asian Journal of Applied Sciences 6, no. 1 (February 16, 2018). Accessed January 25, 2022. https://ajouronline.com/index.php/AJAS/article/view/5193.