JOHNSTON, Riley. Black Holes and Time: Opinion. International Journal of Physics Research and Applications, [S. l.], v. 6, n. 2, p. 165–166, 2023. DOI: 10.29328/journal.ijpra.1001067. Disponível em: https://www.physicsresjournal.com/ijpra/article/view/ijpra-aid1067. Acesso em: 1 may. 2025.