Thanh, Lê, Nguyễn Văn Ngọc, and Nguyễn Thúc Hải. “Separation of Duty in Temporal Constraint Role-Based across Control Model”. <i>Journal of Computer Science and Cybernetics</i> 22, no. 2 (July 23, 2012): 164–180. Accessed December 5, 2025. https://vjs.ac.vn/jcc/article/view/1405.