Luxán, M. P., F. Dorrego, and R. Sotolongo. “Mortars and Treatments in the Restoration of the Altarpiece of the High Altar of the Pilar Basilica”. Materiales De Construcción, vol. 50, no. 258, June 2000, pp. 27-36, doi:10.3989/mc.2000.v50.i258.407.