A. Sahaya Sudha, K. R. Vijayalakshmi. Arithmetic Operations of Hexagonal Intuitionistic Fuzzy Number Using Extension Principle. Int. J. Math. And Appl. [Internet]. 2018 May 15 [cited 2025 Oct. 13];6(2 - A):219-25. Available from: https://ijmaa.in/index.php/ijmaa/article/view/666