Nand, Shardha, Siti Haryani Shaikh Ali, Shahrulniza Musa, and Mazliham Mohd Su’ud. “A Real-Time Deep Learning Framework for Classroom Facial Expression Recognition: Performance Optimization and Model Evaluation”. Engineering, Technology & Applied Science Research 16, no. 3 (June 6, 2026): 35523–35528. Accessed June 8, 2026. https://mail.etasr.com/index.php/ETASR/article/view/17088.