ILIEVA, D.; VAPTZAROVA, G. Research Project for the Preservation of the Cultural and Historical Heritage. Digital Presentation and Preservation of Cultural and Scientific Heritage, [S. l.], v. 7, p. 231–238, 2017. DOI: 10.55630/dipp.2017.7.21. Disponível em: https://dipp.math.bas.bg/dipp/article/view/dipp.2017.7.21. Acesso em: 29 feb. 2024.