Upper Distance k-Cost Effective Number in the Join of Graphs.
European Journal of Pure and Applied Mathematics, Maryland, USA, v. 13, n. 3, p. 701–709, 2020. DOI:
10.29020/nybg.ejpam.v13i3.3657. Disponível em:
https://www.ejpam.com/index.php/ejpam/article/view/3657. Acesso em: 13 feb. 2025.