SZABO, N. Formalizing and Securing Relationships on Public Networks. First Monday, [S. l.], v. 2, n. 9, 1997. DOI: 10.5210/fm.v2i9.548. Disponível em: https://firstmonday.org/ojs/index.php/fm/article/view/548. Acesso em: 1 feb. 2023.