BERLINER, H. The Fredkin Challenge Match. AI Magazine, [S. l.], v. 2, n. 2, p. 30, 1981. DOI: 10.1609/aimag.v2i2.101. Disponível em: https://ojs.aaai.org/aimagazine/index.php/aimagazine/article/view/101. Acesso em: 18 apr. 2024.