KOWALSKI, Wojciech. Copyright protection of the 20th century cultural heritage. Protection of Cultural Heritage, [S. l.], n. 3, p. 29–44, 2017. DOI: 10.24358/ODK_2017_03_03. Disponível em: https://ph.pollub.pl/index.php/odk/article/view/830. Acesso em: 1 may. 2024.