KRÓL, J. How do we know that physical spacetime in cosmology is smooth and 4-dimensional?. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 63, p. 101–111, 2017. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/412. Acesso em: 3 feb. 2023.