SZYBKA, Sebastian Jan. Some remarks on the first image of a black hole. Philosophical Problems in Science, [S. l.], n. 68, p. 281–294, 2020. DOI: 10.59203/zfn.68.497. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/497. Acesso em: 8 dec. 2025.