1.Ban Đoàn V, Hà HC, Quảng V Đức. Normalizing object classes in fuzzy object-oriented database schema. J. Comput. Sci. Cybern. [Internet]. 2012 Apr. 26 [cited 2025 Dec. 5];27(2):131-4. Available from: https://vjs.ac.vn/jcc/article/view/497