PENNY NGU AI HUONG. Systematic Literature Review of Mixed Variables Classification. International Journal of Intelligent Systems and Applications in Engineering, [S. l.], v. 12, n. 4, p. 4328–4338, 2024. Disponível em: https://www.ijisae.org/index.php/IJISAE/article/view/7053. Acesso em: 17 sep. 2025.