CUI, SHU-YU; TIAN, GUI-XIAN. The kirchhoff index and Laplacian spectrum of coronae. Utilitas Mathematica , [S. l.], v. 103, 2017. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1214. Acesso em: 7 may. 2026.