A Novel Technique for Constructing Difference Schemes for Systems of Singularly Perturbed Equations. Communications in Computational Physics, [S. l.], v. 19, n. 5, p. 1287–1301, 2020. DOI: 10.4208/cicp.scpde14.21s. Disponível em: https://global-sci.com/index.php/cicp/article/view/6323. Acesso em: 6 dec. 2025.