Danilo Sande, Michel Araújo, and Lucas Santana. 2022.
 Cryptonium: Educational cryptogame. In <em>Companion Proceedings of the 21st Brazilian Symposium on Games and Digital Entertainment</em>, October 24, 2022, Natal/RN, Brasil. SBC, Porto Alegre, Brasil, 1086-1090. DOI: <a href="https://doi.org/10.5753/sbgames_estendido.2022.225364">https://doi.org/10.5753/sbgames_estendido.2022.225364</a>.