LIN, C.-J. . Student Attentive State Data Accumulation for Attention Tracker Development. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 15, n. 3, p. 204–217, 2016. Disponível em: https://ijlter.net/index.php/ijlter/article/view/964. Acesso em: 30 apr. 2026.