NARDES, R. C. Analysis of South America coins of the XIX and XX centuries by XRF technique. Brazilian Journal of Radiation Sciences, [S. l.], v. 9, n. 1A, 2021. DOI: 10.15392/bjrs.v9i1A.1433. Disponível em: https://bjrs.org.br/revista_33014/index.php/REVISTA/article/view/1433. Acesso em: 25 dec. 2024.