NUNES, M. das Gracas Volpe; HASEGAWA, R. Developing Intelligent Tutoring Systems for Mathematics. Computing and Informatics, [S. l.], v. 16, n. 6, p. 561–581, 2012. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/646. Acesso em: 23 may. 2025.