POLAK, Paweł. Teoria względności wczoraj i dziś. Philosophical Problems in Science, [S. l.], n. 41, p. 147–151, 2007. DOI: 10.59203/zfn.41.272. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/272. Acesso em: 8 dec. 2025.