Youssri, Y. H., and A. G. Atta. “Petrov-Galerkin Lucas Polynomials Procedure for the Time-Fractional Diffusion Equation”. Contemporary Mathematics 4, no. 2 (April 8, 2023): 230–248. Accessed February 9, 2025. https://ojs.wiserpub.com/index.php/CM/article/view/2420.