Mohammed, Hadeel, Mohammed Nasser Hussain, and Faiz Al Alawy. “Facial Expression Recognition: Machine Learning Algorithms and Feature Extraction Techniques”. Al-Iraqia Journal for Scientific Engineering Research 2, no. 2 (June 1, 2023): 23–28. Accessed May 3, 2026. https://ijser.aliraqia.edu.iq/index.php/ijser/article/view/67.