Saeed, Abdulkafi. “Solving 2D Time-Fractional Diffusion Equations by Preconditioned Fractional EDG Method”. Journal of Progressive Research in Mathematics 14, no. 2 (December 14, 2018): 2388-2394. Accessed December 22, 2024. http://scitecresearch.com/journals/index.php/jprm/article/view/1661.