FATMA N. A. MOHAMED; MOHAMED H. AMSAAD. Analytical Results on existence and stability for coupled systems of three 1st order nonlinear differential equations with nonlocal conditions using Banach contraction mapping approach . African Journal of Advanced Pure and Applied Sciences , [S. l.], v. 5, n. 1, p. 417–429, 2026. Disponível em: https://aaasjournals.com/index.php/ajapas/article/view/1900. Acesso em: 19 mar. 2026.