Metrics Feedback Cycle: measuring and improving user engagement in gamified eLearning systems. International Journal of Serious Games, [S. l.], v. 4, n. 4, 2017. DOI: 10.17083/ijsg.v4i4.192. Disponível em: https://journal.seriousgamessociety.org/index.php/IJSG/article/view/192.. Acesso em: 27 nov. 2024.