1.
K. Dhurai, A. Karpagam. New Membership Function and New Ranking Function on Heptagon Fuzzy Number. Int. J. Math. And Appl. [Internet]. 2017 Dec. 30 [cited 2025 Nov. 26];5(4 - F):875-8. Available from: http://ijmaa.in/index.php/ijmaa/article/view/1351