Luxán, M. P., D. Gaspar, R. Sotolongo, M. T. Solesio, and F. Dorrego. 1999. “Torroja Institute, the Historic Building: Conservation and Characteristics of the Materials of Its façades”. Materiales De Construcción 49 (255):41-48. https://doi.org/10.3989/mc.1999.v49.i255.441.