G. Uthra, K. Thangavelu, and S. Shunmugapriya. “Ranking Generalized Institutionistic Pentagonal Fuzzy Number by Centroidal Approach”. International Journal of Mathematics And its Applications 5, no. 4 - C (November 15, 2017): 389–393. Accessed January 10, 2026. https://ijmaa.in/index.php/ijmaa/article/view/1285.