AZAM, Irfan; ALI KHAN, Sajid. Feature Extraction Trends for Intelligent Facial Expression Recognition: A Survey. Informatica, [S. l.], v. 42, n. 4, 2018. DOI: 10.31449/inf.v42i4.2037. Disponível em: https://puffbird.ijs.si/index.php/informatica/article/view/2037. Acesso em: 8 aug. 2025.