Gravitation Ever Since and Forever. Global Journal of Science Frontier Research, [S. l.], v. 21, n. A3, p. 5–16, 2021. DOI: 10.34257/GJSFRAVOL21IS3PG5. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/3007. Acesso em: 14 aug. 2026.