Vinola, C., and K. Vimaladevi. “A Survey on Human Emotion Recognition Approaches, Databases and Applications”. ELCVIA Electronic Letters on Computer Vision and Image Analysis 14, no. 2 (December 16, 2015): 24–44. Accessed June 2, 2025. https://elcvia.cvc.uab.cat/article/view/v14-n2-vinola-vimaladevi.