Lima, M. E. de S., E. C. de Oliveira, and A. da C. Viana. 2022. “Variational Formulation and A Priori Estimates for the Galerkin Method for a Fractional Diffusion Equation”. Trends in Computational and Applied Mathematics 23 (4):673-82. https://doi.org/10.5540/tcam.2022.023.04.00673.