MCCUNE, B. P. Artificial Intelligence at Advanced Information and Decision Systems. AI Magazine, [S. l.], v. 2, n. 2, p. 44, 1981. DOI: 10.1609/aimag.v2i2.104. Disponível em: https://ojs.aaai.org/index.php/aimagazine/article/view/104. Acesso em: 31 jul. 2021.