LIU, Ying; HAO, Yaofei. Multi-Level Text Clustering in Subject Knowledge Library and its Visualization. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 18, n. 17, p. pp. 251–265, 2023. DOI: 10.3991/ijet.v18i17.43489. Disponível em: https://online-journals.org/index.php/i-jet/article/view/43489. Acesso em: 20 may. 2024.