J. Jhonson Savarimuthu, and P. Abirami. “Octagonal Fuzzy Number and Its Corresponding Matrices”. International Journal of Mathematics And its Applications 6, no. 1 (Special Issue) (May 1, 2018): 75–82. Accessed July 22, 2024. https://ijmaa.in/index.php/ijmaa/article/view/1398.