HE, H.- yan; ZHANG, H.- ping,; LUO, H.- fang. Design of Multi-level Teaching System Based on Association Rule Mining. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 11, n. 11, p. pp. 43–48, 2016. DOI: 10.3991/ijet.v11i11.6252. Disponível em: https://online-journals.org/index.php/i-jet/article/view/6252. Acesso em: 21 jan. 2022.