LI, CHUANTAO. The general sum atom-bond connectivity index of Polycyclic Aromatic Hydrocarbons (PAHs). Utilitas Mathematica , [S. l.], v. 101, 2016. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1136. Acesso em: 7 may. 2026.