HAILAN, Ahmad M. Analysis of Hierarchical Routing Models. Iraqi Journal of Science, [S. l.], v. 57, n. 4A, p. 2490–2501, 2022. Disponível em: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/6376.. Acesso em: 8 dec. 2025.