DINO, H. I.; ABDULRAZZAQ, M. B. A Comparison of Four Classification Algorithms for Facial Expression Recognition. Polytechnic Journal, [S. l.], v. 10, n. 1, p. 74-80, 2020. DOI: 10.25156/ptj.v10n1y2020.pp74-80. Disponível em: https://journals.epu.edu.iq/index.php/polytechnic/article/view/137. Acesso em: 5 may. 2024.