THANH, L.; NGỌC, N. V.; HẢI, N. T. Role hierarchies for temporal constraint role-based access control model. Journal of Computer Science and Cybernetics, [S. l.], v. 21, n. 3, p. 230–243, 2012. DOI: 10.15625/1813-9663/21/3/1247. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1247. Acesso em: 7 may. 2024.