1. Mackey, G.W. (1963). The Mathematical Foundations of Quantum Mechanics, W. A. Benjamin Inc.
2. Varadarajan, V.S. (2007). Geometry of Quantum Theory, Springer. [2nd ed.].
3. Beltrametti, E.G., and Cassinelli, G. (1981). The Logic of Quantum Mechanics, Adison-Wesley.
4. Łukasiewicz, J. (1913). Logical Foundations of Probability Theory, Akademien der Wissenschaften Schweiz.
5. Fuzzy sets;Zadeh;Inf. Control,1965