SAGRERA, J. L. Quantitative analysis by X ray fluorescence. Materiales de Construcción, [S. l.], v. 16, n. 122, p. 35–41, 1966. DOI: 10.3989/mc.1966.v16.i122.1710. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/1710. Acesso em: 2 may. 2024.