NAGLE, Aniket; NOVAK, Domen; WOLF, Peter; RIENER, Robert. The effect of different difficulty adaptation strategies on enjoyment and performance in a serious game for memory training. Journal of Health Informatics, Brasil, v. 6, 2014. Disponível em: https://jhi.sbis.org.br/index.php/jhi-sbis/article/view/372. Acesso em: 20 may. 2024.