E. Clua <em>et al.</em>"Challenges for XR in Games", in <em>Anais Estendidos do XX Simpósio Brasileiro de Jogos e Entretenimento Digital</em>, Online, 2021, pp. 1017-1020, doi: <a href="https://doi.org/10.5753/sbgames_estendido.2021.19750">https://doi.org/10.5753/sbgames_estendido.2021.19750</a>.