Kulli, V. R. “Edge Version of Sombor and Nirmala Indices of Some Nanotubes and Nanotori”. International Journal Of Mathematics And Computer Research 11, no. 3 (March 18, 2023): 3305-3310. Accessed November 18, 2024. https://ijmcr.in/index.php/ijmcr/article/view/534.