Quang, Hoàng, and Hồ Thị Thanh. “Extension of Method for Converting Timeer Model to Relational Model”. <i>Journal of Computer Science and Cybernetics</i> 25, no. 3 (April 28, 2012): 246–257. Accessed April 4, 2026. https://cip.vast.vn/jcc/article/view/577.