Sarabia Castelló, E., and A. García Santos. “Variation of the Surface Chromatic Properties of Exposed Concrete façades Treated With Anti-Graffiti Products”. Revista De La Construcción. Journal of Construction, vol. 15, no. 1, Apr. 2016, pp. 51-60, http://146.155.94.136/index.php/RDLC/article/view/13242.