A. Revathi,D. Christia Jebakumari J. Vijaya Xavier Parthipan. “A Study on Coupling Index of Graphs ”. Journal of Computational Analysis and Applications (JoCAAA), vol. 33, no. 07, Dec. 2024, pp. 3730-43, https://eudoxuspress.com/index.php/pub/article/view/5722.