R.Radha, Dr., Atchatha. M, Kaushik. B, Agassi Felix A, and G. Staflin Betzy. “Human Emotion Surveillance Using Computer Vision”. International Journal of Engineering & Technology 7, no. 4.6 (September 25, 2018): 9–12. Accessed May 3, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/20223.