RAJAGOPAL, A.; SIVAKUMAR, S. M. Optimality of grids based on a combined r-h adaptive strategy. Computer Assisted Methods in Engineering and Science, [S. l.], v. 13, n. 2, p. 247–268, 2006. Disponível em: https://cames.ippt.gov.pl/index.php/cames/article/view/950. Acesso em: 5 mar. 2026.