BoutibaM., Baghli-BendimeradS., and FečkanM. “Numeric FEM’s Solution for Space-Time Diffusion Partial Dfferential Equations With Caputo–Fabrizion and Riemann–Liouville Fractional Order’s Derivatives”. Annales Mathematicae Silesianae, Vol. 37, no. 2, July 2023, pp. 204-23, https://journals.us.edu.pl/index.php/AMSIL/article/view/15789.