Yimyam, Worawut, and Mahasak Ketcham. “The Grading Multiple Choice Tests System via Mobile Phone Using Image Processing Technique”. International Journal of Emerging Technologies in Learning (iJET) 13, no. 10 (October 26, 2018): pp. 260–269. Accessed November 24, 2024. https://online-journals.org/index.php/i-jet/article/view/8341.