1. Robinson, J.A.: A machine oriented logic based on the resolution principle. J.ACM 12(1), 23–41 (1965)
2. Lee, R., Chang, C.L.: Some properties of fuzzy logic. Inf. Control 19(1), 417–431 (1971)
3. Lee, R.: Fuzzy logic and the resolution principle. J. ACM 19(1), 109–119 (1972)
4. Shen, Z., Ding, L., Mukaidono, M.: Fuzzy resolution principle. In: Proceedings of the Eighteenth International Symposium on Multivalued Logic, Spain, May 24–26, 1988
5. Mukaidono, M.: Fuzzy inference of resolution style. In: Yager, R.R. (ed.) Fuzzy Set and Possibility Theory, pp. 224–231. Pergamon Press, New York (1982)