I. Khaleel O. Variational Iteration Method for Solving Multi-Fractional Integro Differential Equations. Iraqi Journal of Science [Internet]. 2023 Oct. 22 [cited 2025 Dec. 8];55(3A):1086-94. Available from: https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/11396