SZMYGIN, Boguslaw. Classification and categorization in the system of monument protection. Protection of Cultural Heritage, [S. l.], n. 2, p. 121–132, 2016. DOI: 10.24358/ODK_2016_02_11. Disponível em: https://ph.pollub.pl/index.php/odk/article/view/158. Acesso em: 19 apr. 2024.