SA’ADAH, Maria Syifaus. Spektrum dan energi laplace serta signless-laplace graf komutatif dari grup dihedral. Maliki Interdisciplinary Journal, [S. l.], v. 1, n. 3, p. 175–202, 2023. Disponível em: https://urj.uin-malang.ac.id/index.php/mij/article/view/4461. Acesso em: 4 aug. 2026.