SAHELI, M.; ASHRAFI, A. R. The eccentric connectivity index of armchair polyhex nanotubes. Macedonian Journal of Chemistry and Chemical Engineering, [S. l.], v. 29, n. 1, p. 71–75, 2010. DOI: 10.20450/mjcce.2010.175. Disponível em: https://mjcce.org.mk/index.php/MJCCE/article/view/175. Acesso em: 4 may. 2024.