DIGITAL LIBRARIES, European. Sector-Specific Guidelines on Due Diligence Criteria for Orphan Works. Joint Report. DigItalia, [S. l.], v. 3, n. 2, p. 135–141, 2008. Disponível em: https://digitalia.cultura.gov.it/article/view/454. Acesso em: 12 giu. 2025.