Gao, Yun, Li Liang, and Wei Gao. “Randic Index and Edge Eccentric Connectivity Index of Certain Special Molecular Graphs”. International Journal of Chemistry and Materials Research 2, no. 8 (August 15, 2014): 81–87. Accessed February 4, 2026. https://www.archive.conscientiabeam.com/index.php/64/article/view/1834.