Is Pollution Effect of Finite Difference Schemes Avoidable for Multi-Dimensional Helmholtz Equations with High Wave Numbers?. Communications in Computational Physics, [S. l.], v. 21, n. 2, p. 490–514, 2018. DOI: 10.4208/cicp.OA-2016-0057. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/6410. Acesso em: 5 dec. 2025.