WALTZ, D. L. Artificial Intelligence: Realizing the Ultimate Promises of Computing. AI Magazine, [S. l.], v. 18, n. 3, p. 49, 1997. DOI: 10.1609/aimag.v18i3.1305. Disponível em: https://ojs.aaai.org/index.php/aimagazine/article/view/1305. Acesso em: 2 dec. 2020.