GHORPADE4, MR. SAMEER WAGHMARE5, P. P. M. K. G. M. S. R. M. Head gesture recognition for hands-free control of robot movements. International Journal of Engineering and Computer Science, india, v. 4, n. 03, 2017. Disponível em: http://ijecs.in/index.php/ijecs/article/view/1072. Acesso em: 3 may. 2024.