STEFIK, M.; BOBROW, D. G. Object-Oriented Programming: Themes and Variations. AI Magazine, [S. l.], v. 6, n. 4, p. 40, 1985. DOI: 10.1609/aimag.v6i4.508. Disponível em: https://ojs.aaai.org/aimagazine/index.php/aimagazine/article/view/508. Acesso em: 29 mar. 2024.