Fayed A, Alfrgany S, Makhzoum H. The Existence and Uniqueness of Periodic Solutions for Nonlinear Neutral first order differential equation with Functional Delay. ES [انترنت]. 22 مارس، 2022 [وثق 14 مايو، 2024];(8). موجود في: https://journals.uob.edu.ly/FESJ/article/view/800