STANCHEV, P. The Third National Information Day: Open Access to Scientific Information. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 2, p. 199–202, 2012. DOI: 10.55630/dipp.2012.2.16. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2012.2.16. Acesso em: 4 may. 2024.