BoutibaM.; Baghli-BendimeradS.; 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, v. 37, n. 2, p. 204-223, 26 jul. 2023.