AL-HAYANI, W.; ولید; J. AHMED, M. The Homotopy Perturbation Method to Solve Initial Value Problems of First Order with Discontinuities. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 16, n. 2, p. 61–70, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19823. Acesso em: 5 aug. 2025.