Thi Thu Hien Le, Van Tuan Chu, and Van Tuan Pham. “Fabrication, Structural Characteristics, and Influence of Bi3+ Doping Concentration on UV-Vis Spectra of Bi3+:SnO2 Nanocomposite Materials”. Vietnam Journal of Science, Technology and Engineering 65, no. 1 (March 15, 2023): 9-13. Accessed July 15, 2026. https://vietnamscience.vjst.vn/index.php/vjste/article/view/1104.