A Fourth-Order Kernel-Free Boundary Integral Method for Interface Problems. Communications in Computational Physics, [S. l.], v. 33, n. 3, p. 764–794, 2023. DOI: 10.4208/cicp.OA-2022-0236. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/7154. Acesso em: 5 dec. 2025.