Point Integral Method for Elliptic Equations with Variable Coefficients on Point Cloud. Communications in Computational Physics, [S. l.], v. 26, n. 2, p. 506–530, 2019. DOI: 10.4208/cicp.OA-2018-0024. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/6725. Acesso em: 5 dec. 2025.