VAN ZANTEN, L. Law of gravity. JOURNAL OF ADVANCES IN PHYSICS, [S. l.], v. 16, n. 1, p. 34–45, 2019. DOI: 10.24297/jap.v16i1.8164. Disponível em: https://rajpub.com/index.php/jap/article/view/8164. Acesso em: 28 nov. 2021.