“The Influence of Doping Concentration on Photocatalytic Activity of Bismuth-Doped Titanium (IV) Oxide”, NJP, vol. 32, no. 3, pp. 100–109, Nov. 2023, Accessed: Apr. 26, 2025. [Online]. Available: https://njp.nipngr.org/index.php/njp/article/view/124