THUY, Do Thi Thanh. A theoretical framework for managing training materials toward open education in colleges in mountainous areas. Tennessee Research International of Social Sciences, [S. l.], v. 8, n. 2, p. 194–201, 2026. Disponível em: http://triss.org/index.php/journal/article/view/173. Acesso em: 26 sep. 2026.