D. Sande, M. Araújo, and L. Santana.
" Cryptonium: Educational cryptogame", in <em>Companion Proceedings of the 21st Brazilian Symposium on Games and Digital Entertainment</em>, Natal/RN, 2022, pp. 1086-1090, doi: <a href="https://doi.org/10.5753/sbgames_estendido.2022.225364">https://doi.org/10.5753/sbgames_estendido.2022.225364</a>.