Implementing Persistent Identifiers: Overview of concepts, guidelines and recommendations / Hans-Werner Hilse and Jochen Kothe. DigItalia, [S. l.], v. 2, n. 1, p. 167–168, 2007. Disponível em: https://digitalia-ojs35-test.archicoop.it/index.php/digitalia/article/view/420. Acesso em: 28 apr. 2026.