HOLDEN, E. . Reduction of alkalies in portland cement. Materiales de Construcción, [S. l.], n. 018, p. 12–13, 1950. DOI: 10.3989/mc.1950.i018.3190. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/3190. Acesso em: 4 may. 2024.