P.C., Vasanth, and Nataraj K.R. “Facial Expression Recognition Using SVM Classifier”. Indonesian Journal of Electrical Engineering and Informatics (IJEEI) 3, no. 1 (March 1, 2015): 16–20. Accessed November 1, 2026. https://section.iaesonline.com/index.php/IJEEI/article/view/126.