VAN LANKVELD, Giel; SPRONCK, Pieter; RAUTERBERG, Matthias. Difficulty Scaling through Incongruity. Proceedings of the AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment, [S. l.], v. 4, n. 1, p. 228–229, 2008. DOI: 10.1609/aiide.v4i1.18706. Disponível em: https://ojs.aaai.org/index.php/AIIDE/article/view/18706. Acesso em: 30 may. 2026.