References:
1. Zadeh, L.A. "Fuzzy sets", Information and Control, 8(3), pp. 338-353 (1965).
2. Atanassov, K.T. "Intuitionistic fuzzy sets", Fuzzy Sets and Systems, 20(1), pp. 87-96 (1986).
3. Garg, H., Agarwal, N., Tripathi, A. "Some improved interactive aggregation operators under interval-valued intuitionistic fuzzy environment and its application to decision making process", Scientia Iranica, 24(5), pp. 2581-2604 (2017).
4. Yager, R.R. "Pythagorean membership grades in multicriteria decision making", IEEE Transaction on Fuzzy Systems, 22, pp. 958-965 (2014).
5. Yager, R.R. and Abbasov, A.M. "Pythagorean membership grades, complex numbers and decision making", International Journal of Intelligent Systems, 28, pp. 436-452 (2013).
6. Zhang, X.L. and Xu, Z.S. "Extension of TOPSIS tomulti-criteria decision making with Pythagorean fuzzy sets", International Journal of Intelligent Systems, 29, pp. 1061-1078 (2014).
7. Peng, X.D. and Yang, Y. "Fundamental properties of interval-valued Pythagorean fuzzy aggregation operators", International Journal of Intelligent Systems, 30, pp. 1-44 (2015).
8. Peng, X.D. "New operations for interval-valued Pythagorean fuzzy set", Scientia Iranica, 26(2), pp. 1049-1076 (2019). DOI: 10.24200/sci.2018.5142.1119.
9. Zhang, X.L. "Multicriteria Pythagorean fuzzy decision analysis: a hierarchical QUALIFLEX approach with the closeness index-based ranking methods", Information Sciences, 330, pp. 104-124 (2016).
10. Chen, T.Y. "Multiple criteria decision analysis under complex uncertainty: A pearson-like correlation -based Pythagorean fuzzy compromise approach", International Journal of Intelligent Systems, pp. 1-38 (2018). https://doi.org/10.1002/int.22045.
11. Tang, X. and Wei, G. "Some generalized Pythagorean 2-tuple linguistic Bonferroni mean operators in multiple attribute decision making", Journal of Algorithms and Computational Technology, 12(4), pp. 387-398 (2018). https://doi.org/10.1177/1748301818791506.
12. Peng, X.D. and Selvachandran, G. "Pythagorean fuzzy set: state of the art and future directions", Artificial Intelligence Review, 52(3), pp. 1873-1927 (2019). DOI:10.1007/s10462-017-9596-9.
13. Peng, X.D. and Yang, Y. "Pythagorean fuzzy choquet integral based MABAC method for multiple attribute group decision making", International Journal of Intelligent Systems, 31(10), pp. 989-1020 (2016).
14. Peng, X.D., Yuan, H.Y., and Yang, Y. "Pythagorean fuzzy information measures and their applications", International Journal of Intelligent Systems, 32(10), pp. 991-1029 (2017).
15. Grzegorzewski, P. "Distance between intuitionistic fuzzy sets and/or interval-valued fuzzy sets based on the Hausdorff metric", Fuzzy Sets and Systems, 148, pp. 319-328 (2004).
16. Szmidt, E. and Kacprzyk, J. "Distance between intuitionistic fuzzy sets", Fuzzy Sets and Systems, 114, pp. 505-518 (2000).
17. Xu, Z.S. and Chen, J. "An overview of distance and similarity measures of intuitionistic fuzzy sets", International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 16, pp. 529-555 (2008).
18. Dubois, D. and Prade, H., Fuzzy Sets and Systems: Theory and Applications, New York: Academic Press (1980).
19. Zeng, W.Y. and Guo, P. "Normalized distance, similarity measure, inclusion measure and entropy of intervalvalued fuzzy sets and their relationships", Information Sciences, 178, pp. 1334-1342 (2008).
20. Deqing, L. and Wenyi, Z. "Distance measure of Pythagorean fuzzy sets", International Journal of Intelligent Systems, 33, pp. 348-361 (2018).
21. Liu, Y., Qin, Y., and Han, Y. "Multiple criteria decision making with probabilities in interval-valued Pythagorean fuzzy setting", International Journal of Fuzzy Systems, 20(2), pp. 558-571 (2018).
22. Peng, X.D. and Yang, Y. "Some results for Pythagorean fuzzy sets", International Journal of Intelligent Systems, 30, pp. 1133-1160 (2015).
23. Garg, H. "A novel improved accuracy function for interval valued Pythagorean fuzzy sets and its applications in the decision-making process", International Journal of Intelligent Systems, 32(12), pp. 1247-1260 (2017).
24. Yager, R.R., Engemann, K.J., and Filev, D.P. "On the concept of immediate probabilities", International Journal of Intelligent Systems, 10, pp. 373-397 (1995).
25. Wei, G.W. and Merigo, J.M. "Methods for strategic decision-making problems with immediate probabilities in intuitionistic fuzzy setting", Scientia Iranica, 19(6), pp. 1936-1946 (2012).