VON ÄRBACH, J.; THØRVÄLD, L.; DUCK, D. F. A Relational Model of Data for Large Shared Data Banks. Demo Journal AI, [S. l.], v. 1, n. 2, p. 1–3, 2020. DOI: 10.1237/djai.v1i2.23. Disponível em: https://journals.academebooks.com/index.php/djai/article/view/23. Acesso em: 29 apr. 2024.