SAARILUOMA, P. The Conceptual Levels and Theory Languages of Interaction Design. Human Technology, [S. l.], v. 5, n. 2, p. 116–120, 2009. DOI: 10.17011/ht/urn.200911234466. Disponível em: https://ht.csr-pub.eu/index.php/ht/article/view/85. Acesso em: 17 jul. 2026.