Abdulhussien, Wijdan Rashid, Nidhal K. El Abbadi, and Abdul M. Gaber. “Hybrid Deep Neural Network for Facial Expressions Recognition”. Indonesian Journal of Electrical Engineering and Informatics (IJEEI) 9, no. 4 (December 31, 2021): 993–1007. Accessed October 30, 2026. https://section.iaesonline.com/index.php/IJEEI/article/view/3425.