Yusuf, Rahmadhani, and Arif Akbarul Huda. “Deteksi Emosi Wajah Menggunakan Metode Backpropagation”. Journal Automation Computer Information System 3, no. 2 (September 16, 2023): 103–114. Accessed June 4, 2026. https://jacis.pubmedia.id/index.php/jacis/article/view/60.