Brendon Santos, Gilda Assis, and Tiago Lima. 2021.
 Ratings and Visual Elements: a preliminary analysis focused on game design. In <em>Companion Proceedings of the 20th Brazilian Symposium on Games and Digital Entertainment</em>, October 18, 2021, Online, Brasil. SBC, Porto Alegre, Brasil, 679-682. DOI: <a href="https://doi.org/10.5753/sbgames_estendido.2021.19706">https://doi.org/10.5753/sbgames_estendido.2021.19706</a>.