STANCHEV, P.; SIMEONOV, G. Fourth National Information Day and Workshop: Open Access to Scientific Information and Data. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 3, p. 243–246, 2013. DOI: 10.55630/dipp.2013.3.29. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2013.3.29. Acesso em: 14 apr. 2024.