POWELL, Robert M; SWORDS, Michael; RODEGHIER, Mark; BUDINGER, Phyllis. Isotope Ratios and Chemical Analysis of the 1957 Brazilian Ubatuba Fragment. Journal of Scientific Exploration, [S. l.], v. 36, n. 1, p. 39–48, 2022. DOI: 10.31275/20222415. Disponível em: https://www.journalofscientificexploration.org/index.php/jse/article/view/2415. Acesso em: 24 apr. 2026.