@article{lima_oliveira_viana_2022,  title={Variational Formulation and <i>A Priori</i> Estimates for the Galerkin Method for a Fractional Diffusion Equation},  volume={23},  ISSN={2676-0029},  url={https://doi.org/10.5540/tcam.2022.023.04.00673},  DOI={10.5540/tcam.2022.023.04.00673},  number={4},  journal={Trends in Computational and Applied Mathematics},  publisher={Sociedade Brasileira de Matemática Aplicada e Computacional - SBMAC},  author={LIMA, M. E. de S. and OLIVEIRA, E. C. de and VIANA, A. da C.},  year={2022},  month={Oct},  pages={673–682} }