LANG, Yu. Design and Implementation of HMM for 3D Emotion Recognition. International Journal on Smart Material and Mechatronics, [S. l.], v. 4, n. 1, p. 269–272, 2017. Disponível em: https://ijsmm.id/index.php/ijsmm/article/view/35. Acesso em: 27 aug. 2025.