I. KHALEEL, Omar. Variational Iteration Method for Solving Multi-Fractional Integro Differential Equations. Iraqi Journal of Science, [S. l.], v. 55, n. 3A, p. 1086–1094, 2023. Disponível em: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11396.. Acesso em: 8 dec. 2025.