AHMED, Chinar Sh. Weighted Residual Method for the System of Nonlinear Volterra Integral Equations of the Second Kind Using an Exponential Function. Ibn AL-Haitham Journal For Pure and Applied Sciences, Baghdad, Iraq., v. 34, n. 3, p. 98–103, 2021. DOI: 10.30526/34.3.2682. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/2682. Acesso em: 3 apr. 2025.