Multi-Layer Hierarchical Structures. CSIAM Transactions on Applied Mathematics, [S. l.], v. 2, n. 2, p. 263–296, 2021. DOI: 10.4208/csiam-am.2021.nla.02. Disponível em: https://global-sci.com/index.php/csiam-am/article/view/7779. Acesso em: 5 dec. 2025.