R. A. Alive, O. H. Huseynov, R. R. Alizadeh, The arithmetic of Z-numbers. Theory and applications, World Scientific, Singapore, 2015.
 T. Allahviranloo, S. Abbasbandy, R. A. Saneifard, Method for ranking of fuzzy numbers using new weighted distance, Mathematical and Computational Applications, 16(2) (2011), 359-369.
 A. Abbaszadeh Sori, A. Ebrahimnejad, H. Motameni, The fuzzy inference approach to solve multi-objective constrained shortest path problem, Journal of Intelligent and Fuzzy Systems, 38 (2020), 4711-4720.
 A. Ebrahimnejad, An effective computational attempt for solving fully fuzzy linear programming using MOLP problem, Journal of Industrial and Production Engineering, (2019), 59-69.
 A. Ebrahimnejad, Fuzzy arithmetic DEA approach for fuzzy multi-objective transportation problem, Operational Research, (2020), 121-152.
 S. Ezadi, T. Allahviranloo, New multi-layer method for Z-number ranking using Hyperbolic Tangent function and convex combination, Intelligent Automation Soft Computing, (2017), 1-7.
 S. Ezadi, T. Allahviranloo, Two new methods for ranking of Z-numbers based on sigmoid function and sign method, International Journal of Intelligent Systems, (2018), 1-12.
 P. Grzegorzewski, Nearest interval approximation of a fuzzy number, Fuzzy Sets and Systems, 130(3) (2002), 321-330.
 F. Hasankhani, T. Allahviranloo, A new method for solving linear programming problems using Z-numbers ranking, Mathematical Sciences, (2021), 35-46.
 B. Kang, D. Wei, Y. Li, Y. Deng, A method of converting Z-number to classical fuzzy number, Journal of Information and Computational Science, 3 (2012), 703-709.
 A. Kumar, J. Kaur, P. Singh, A new method for solving fully fuzzy linear programming problems, Applied Mathematical Modeling, 35(2) (2011), 817-823.
 H. Tanaka, T. Okuda, K. Asai, On fuzzy mathematical programming, The Journal of Cybernetics, 3 (1974), 37-46.
 J. L. Verdegay, A dual approach to solve the fuzzy linear programming problem, Fuzzy Sets and Systems, 14 (1984), 131-141.
 R. R. Yager, On Z-Valuations using Zadehs Z-numbers, International Journal of Intelligent Systems, 27 (2012), 259-278.
 L. A. Zadeh, Generalized theory of uncertainty (GTU)–principal concepts and ideas, Computational Statistics and Data Analysis, 51 (2006), 15-46.
 L. A. Zadeh, A note on Z-numbers, Information Sciences, 181 (2011), 2923-2932.
 H. J. Zimmermann, Fuzzy programming and linear programming with several objective functions, Fuzzy Sets and Systems, 1 (1978), 45-55.