R. Hitzschky, J. Arruda, A. Cassiano, C. Lima, L. Siqueira, and J. Filho.
" Teacher training and digital artifacts: analysis of Digital Educational Resources (DER) and the exploration of a digital educational repository", in <em>Proceedings of the 26th Workshop on Computing at School</em>, Evento Online, 2020, pp. 369-378, doi: <a href="https://doi.org/10.5753/cbie.wie.2020.369">https://doi.org/10.5753/cbie.wie.2020.369</a>.