PIRZADA, S.; GANIE, H.A.; ALGHAMDI, A.M. On the sum of signless Laplacian spectra of graphs. Carpathian Mathematical Publications, [S. l.], v. 11, n. 2, p. 407–417, 2019. DOI: 10.15330/cmp.11.2.407-417. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/2118. Acesso em: 27 apr. 2024.