SZMYGIN, Bogusław. Protection of historic ruins - objectives for theory and practice. Protection of Cultural Heritage, [S. l.], n. 6, p. 191–200, 2018. DOI: 10.35784/odk.885. Disponível em: https://ph.pollub.pl/index.php/odk/article/view/885. Acesso em: 4 may. 2024.