Sanasi, T., S. Pinitsoontorn, M. Horprathum, P. Eiamchai, C. Chananonnawathorn, and W. Hincheeranun. “Development of WO₃ Nanostructure by Acid Treatment and Annealing”. Journal of Metals, Materials and Minerals 27, no. 2 (June 25, 2018). Accessed April 24, 2024. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/325.