CRUTZEN, C. K. M. Invisibility and the Meaning of Ambient Intelligence. The International Review of Information Ethics, Edmonton, Canada, v. 6, p. 52–62, 2006. DOI: 10.29173/irie140. Disponível em: https://informationethics.ca/index.php/irie/article/view/140. Acesso em: 18 may. 2022.