SOEHARYADI, Y.; LINDIARNI, J.; AGUSTIMA, P. N.; BURHAN, M. J. I. On Invariant eigenvalues of Laplacian on complex star metric graphs. Hilbert Journal of Mathematical Analysis, [S. l.], v. 1, n. 2, p. 81–92, 2023. DOI: 10.62918/hjma.v1i2.13. Disponível em: https://hilbertjma.org/hilbertjma/article/view/13. Acesso em: 13 oct. 2025.