NGU, P.; HAMID, H. Systematic Literature Review of Mixed Variables Classification. International Journal of Data Science and Advanced Analytics, [S. l.], v. 5, n. 1, p. 184–192, 2022. DOI: 10.69511/ijdsaa.v5i5.177. Disponível em: http://ijdsaa.com/index.php/welcome/article/view/177. Acesso em: 7 oct. 2025.