1. Tanaka, K. and Sugeno, M. (1990) Stability analysis of fuzzy systems using Lyapunov’s direct method, Proceedings of NAFIPS’90, 133–136.
2. Langari, R. and Tomizuka, M. (1990) Analysis and synthesis of fuzzy linguistic control systems, 1990 ASME Winter Annual Meeting, 35–42.
3. Kitamura, S. and Kurozumi, T. (1991) Extended circle criterion and stability analysis of fuzzy control systems, Proceedings of the International Fuzzy Eng. Symp.’91, 2, 634–643.
4. Tanaka, K. and Sugeno, M. Stability analysis and design of fuzzy control systems, Fuzzy Sets and Systems, 45(2), 135–156.
5. Farinwata S. S. et al. (1993) Stability analysis of the fuzzy logic controller designed by the phase portrait assignment algorithm, Proceedings of 2nd IEEE International Conference on Fuzzy Systems, 1377–1382.