KRATCHANOV, I. Sustainable Development of the Practices of Digitization in National Library “Ivan Vazov” – Plovdiv. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 9, p. 375–382, 2019. DOI: 10.55630/dipp.2019.9.41. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2019.9.41. Acesso em: 6 may. 2024.