The Iterative Technique for a Fourth-Order Three-Point Nonlinear BVP with Changing Sign Green’s Function. Global Journal of Science Frontier Research, [S. l.], v. 25, n. F1, p. 19–29, 2025. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/103029. Acesso em: 30 jan. 2026.