“The First Zagreb Index and the Narumi-Katayama Index of the Non-Commuting Graph on the Group U_{6n}”. InPrime: Indonesian Journal of Pure and Applied Mathematics 7, no. 2 (October 5, 2025): 117–127. Accessed January 29, 2026. https://journal.uinjkt.ac.id/inprime/article/view/45483.