R. S. P. Hasibuan, E. Purwawijaya, and A. Rambe, “Utilizing DeepFace for Emotion Detection to Enhance User Experience in a School Library Application”, JOTECHCOM, vol. 2, no. 4, pp. 200–206, Nov. 2025, Accessed: Jan. 15, 2026. [Online]. Available: https://journal.technolabs.co.id/index.php/jotechcom/article/view/77