1. Zadeh LA. Possibility theory and soft data analysis. In: Cobb L, Thrall RM, editors. mathematical frontiers of the social and policy sciences. Boulder, Colorado: Westview Press; 1981. p. 69–129.
2. Soft computing and fuzzy logic;Zadeh;IEEE Softw,1994
3. Fuzzy probabilities;Zadeh;Inf Process Manage,1984
4. Buckley JJ. Fuzzy probabilities, new approach and applications. Springer; 2005.
5. Fuzzy sets;Zadeh;Inf Control,1965