Samarth Gupta, S. Iniyan, Vaibhav Gupta,. “Facial Expression Recognition Based Recommendation System”. International Journal of Advanced Science and Technology 29, no. 3 (March 19, 2020): 5669 - 5678. Accessed July 27, 2024. http://sersc.org/journals/index.php/IJAST/article/view/6192.