Solving Systems of Non-Linear Volterra Integral Equations by Combined Sumudu Transform-Adomian Decomposition Method. Iraqi Journal of Science, [S. l.], v. 62, n. 1, p. 252–268, 2021. DOI: 10.24996/ijs.2021.62.1.24. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2498.. Acesso em: 11 dec. 2024.