PATTABIRAMAN, K. Inverse sum indeg coindex of graphs. Carpathian Mathematical Publications, [S. l.], v. 11, n. 2, p. 399–406, 2019. DOI: 10.15330/cmp.11.2.399-406. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/2117. Acesso em: 26 apr. 2024.