Frías, M., and M. I. Sánchez Rojas. “Evolution and Quantification of the Main Sensitisers in Commercial Portland Cements”. Materiales de Construcción 52, no. 265 (March 30, 2002): 57–64. Accessed April 28, 2024. https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/344.