Hierarchical Elements, Local Mappings and the $H$-$P$ Version of the Finite Element Method (Ⅱ). Journal of Computational Mathematics, [S. l.], v. 6, n. 2, p. 142–155, 1988. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/10908. Acesso em: 6 dec. 2025.