Grossi, C. M., R. M. Esbert, and L. M. Suárez del Río. “The Application of the Acoustic Emission Technique to Stone Decay by Sodium Sulphate in Laboratory Tests”. Materiales De Construcción, vol. 47, no. 245, Mar. 1997, pp. 5-15, doi:10.3989/mc.1997.v47.i245.510.