1. Neutrosophy, S.F.: Neutrosophic probability, set, and logic. ProQuest Inf. Learn. 105, 118–123 (1998)
2. Smarandache, F.: A Unifying Field in Logics. Neutrosophy: Neutrosophic Probability, Set and Logic, pp. 1–141. American Research Press, Rehoboth (1999)
3. Smarandache, F.: A Unifying Field in Logics Neutrosophic Logic. Neutrosophy, Neutrosophic Set, Neutrosophic Probability and Statistics. Xiquan, Phoenix (2003)
4. Atanassov, K.T.: Intuitionistic fuzzy sets. Fuzzy Sets Syst. 20(1), 87–96 (1986)
5. Xu, Z.S., Liao, H.: Intuitionistic fuzzy analytic hierarchy process. IEEE Trans. Fuzzy Syst. 22(4), 749–761 (2013)