GAO, Wei; SHI, Li. Wiener Index of Gear Fan Graph and Gear Wheel Graph. Asian Journal of Chemistry, [S. l.], v. 26, n. 11, p. 3397–3400, 2014. DOI: 10.14233/ajchem.2014.17534. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/26_12_60. Acesso em: 23 jul. 2024.