Raksarikorn, T., Philuek, W. and Srikase, S. (2018) “Using Face Detection to Study Students’ Emotion in Classroom Teaching”, International Journal of Integrated Education and Development, 3(2), pp. 29-37. Available at: https://so02.tci-thaijo.org/index.php/ijied/article/view/143524 (Accessed: 9April2020).