Fatma N. A. Mohamed, Mohamed H. Amsaad, and Kh. W. Elkadeky. “Carathéodory Solutions for a Nonlinear Coupled Two-Dimensional Implicit Differential System With Nonlocal Boundary Constraints”. African Journal of Advanced Pure and Applied Sciences 5, no. 4 (October 25, 2026): 161–170. Accessed November 2, 2026. https://aaasjournals.com/index.php/ajapas/article/view/2257.