CALLEJA, J. Historical notes about the development of cement normalization In European Union. Materiales de Construcción, [S. l.], v. 52, n. 268, p. 73–76, 2002. DOI: 10.3989/mc.2002.v52.i268.319. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/319. Acesso em: 28 mar. 2024.