Hanan, Ibtisam K. “The Homotopy Analysis Method for Solving Multi- Fractional Order Integro-Differential Equations”. Al-Nahrain Journal of Science 14, no. 3 (September 1, 2011): 139–143. Accessed May 22, 2026. https://anjs.edu.iq/index.php/anjs/article/view/849.