VIDYASAGAR, V.; SRIDEVI, M. . Numerical Solutions For Singularly Perturbed Differential-Difference Equations: A Dual-Layer Fitted Approach. Migration Letters, London, UK, v. 21, n. S7, p. 735–743, 2024. Disponível em: https://migrationletters.com/index.php/ml/article/view/8804. Acesso em: 24 nov. 2024.