HUSSIEN MARY, Ali. Face Recognition Based Wavelet-PCA Features and Skin Color Model. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 15, n. 2, p. 12–22, 2011. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1382.. Acesso em: 12 mar. 2025.