A. MAKHZOUM, H. .; A. ELMANSOURI, R. The existence and uniqueness of periodic solutions for nonlinear neutral first order differential equation with functional delay. Libyan Journal of Science &Technology, [S. l.], v. 7, n. 2, 2022. DOI: 10.37376/ljst.v7i2.2377. Disponível em: https://journals.uob.edu.ly/LJST/article/view/2377. Acesso em: 27 apr. 2025.