1. Introduction to Many Valued Logics;Ackermann,1967
2. Elements of a theory of inexact measurement;Adams;Philosophy of Science,1965
3. Probability and the logic of conditionals;Adams,1966
4. Fuzzy sets, fuzzy proofs and some unsolved problems in the theory of automatic control;Aizermann;Special Interest Discussion Session Fuzzy Automata and Decision Processes. 6th IFAC World Congress, Boston, Mass,1975
5. Fuzzy sets and their application to medical diagnosis;Albin,1975