Feature Extraction of Human Facail Expressions Using Haar Wavelet and Neural network. Iraqi Journal of Science, [S. l.], v. 57, n. 2C, p. 1558–1565, 2022. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/7226.. Acesso em: 17 may. 2024.