Abdelkawy, M. A., A. Emin, and Anjan Biswas. “A Novel Romanovski-Jacobi Spectral Collocation Scheme for Fourth-Order <i>ψ</I> Fractional Sub-Diffusion Models”. Contemporary Mathematics 7, no. 3 (April 30, 2026): 2929–2945. Accessed May 5, 2026. https://ojs.wiserpub.com/index.php/CM/article/view/7644.