1. Li Hongxing, To see the success of fuzzy logic from mathematical essence of fuzzy control,Fuzzy Systems and Mathematics (in Chinese), 1995, 9(4): 1.
2. Li Hongxing, The mathematical essence of fuzzy controls and fine fuzzy controllers, inAdvances in Machine Intelligence and Soft-Computing (ed. Wang, Paul P.), Vol. IV, Durham: Bookwrights Press, 1997, 55–74.
3. Li Hongxing, Interpolation mechanism of fuzzy control,Science in China, Ser. E, 1998, 41(3): 312.
4. Zhang Naiyao, Structure analysis of typical fuzzy controllers,Fuzzy Systems and Mathematics (in Chinese), 1997, 11 (2): 10.
5. Lecture Notes in Fuzzy Mathematics and Computer Science;Wang Guojun,1997