SZMELTER, Iwona. Alert in the 21st Century. Changes in Theory of Heritage Protection in Tangible, Intangible and Digital Signs. Protection of Cultural Heritage, [S. l.], n. 12, p. 55–70, 2021. DOI: 10.35784/odk.2872. Disponível em: https://ph.pollub.pl/index.php/odk/article/view/2872. Acesso em: 19 apr. 2024.