Pham, Van Thinh, et al. “Synthesis of Nickel-Doped BiVO4 Materials by Hydrothermal Method and Evaluation of Their Photocatalytic Ability to Decompose Methylene Blue under Visible Light”. Vietnam Journal of Science and Technology, vol. 62, no. 3, Mar. 2024, pp. 577-8, doi:10.15625/2525-2518/17140.