1. Local and fuzzy logics;Bellman,1977
2. Fuzzy logic and approximate reasoning;Zadeh;Synthese,1975
3. A theory of approximate reasoning;Zadeh,1979
4. Test-score semantics for natural languages and meaning representation via PRUF;Zadeh,1981
5. The calculus of fuzzy if-then rules;Zadeh;AI Expert,1992