K.J, G. Entropy Measures of Some Nanotubes Using Sombor Index. NanoNEXT, [S. l.], v. 3, n. 3, p. 1–5, 2022. DOI: 10.54392/nnxt2231. Disponível em: https://www.asianresassoc.org/journals/index.php/nanonext/article/view/876. Acesso em: 18 jul. 2026.