Ratanaubol, C., and K. Hirankerd. “Video-Based Facial Recognition to Accurately Identify People Wearing Surgical Masks: Design and Architecture”. International Journal of Educational Communications and Technology, vol. 1, no. 1, Dec. 2021, pp. 45-51, https://ph01.tci-thaijo.org/index.php/IJECT/article/view/247760.