Numerical solution of fractional sub-diffusion and time-fractional diffusion-wave equations via fractional-order Legendre functionsM. R. Hooshmandasl, M. H. Heydari and C. CattaniEur. Phys. J. Plus, 131 8 (2016) 268DOI: https://doi.org/10.1140/epjp/i2016-16268-2