Shallal Saadoon Hatab, H. . “Series Solution of 3D Unsteady Reaction Diffusion Equations Using Homotopy Analysis Method”. Pure Sciences International Journal of Kerbala, vol. 1, no. 3, Sept. 2024, pp. 34-42, https://mail.journals.uokerbala.edu.iq/index.php/psijk/article/view/1886.