CHAROENPONG, T.; SANITTHAI, P. A New Algorithm to Detect Occluded Face from a Head Viewpoint using Hough Transform and Skin Ratio. Walailak Journal of Science and Technology (WJST), [S. l.], v. 12, n. 1, p. 35–49, 2014. Disponível em: https://wjst.wu.ac.th/index.php/wjst/article/view/1204. Acesso em: 2 may. 2024.