Structural and Topological Perspectives on Four-Dimensional Manifolds. International Journal of Multidisciplinary Engineering In Current Research, [S. l.], v. 7, n. 12, p. 83–91, 2022. DOI: 10.63665/vjmxt515. Disponível em: https://ijmec.com/index.php/multidisciplinary/article/view/995. Acesso em: 30 mar. 2026.