TRENCHEVA, T.; TODOROVA, T.; TRENCHEV, I. Digital Right Management (DRM) and Library Copyright Policy. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 2, p. 123–131, 2012. DOI: 10.55630/dipp.2012.2.4. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2012.2.4. Acesso em: 25 may. 2024.