IVANOVA, K.; BOGDANOVA, G.; ZDRAVKOV, K.; PAVLOV, R.; PANEVA-MARINOVA, D. Project "North +": documenting, preserving and providing public access to the cultural heritage in libraries, museums, archives and galleries in North and Central Bulgaria. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 4, p. 263–269, 2014. DOI: 10.55630/dipp.2014.4.32. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2014.4.32. Acesso em: 4 may. 2024.