1. Water repellents and other “protective” treatments: a critical review;Charola;International Journal for Restoration of Buildings and Monuments,1998
2. E. Von Plehwe-Leisen, T. Warsheid, H. Leisen, Studies of long-term behaviour of conservation agents and microbiological contamination on twenty years exposed treated sandstone cubes, in: J. Riederer (Ed.), Proceedings of 8th International Congress on Deterioration and Conservation of Stone, Berlin, Germany, September 30–October 4, 1996, vol. 2, pp. 1029–1037.
3. L. Cadot-Leroux, F. Boutin, 5 années d'exposition aux pluies d'éprouvettes de pierres calcaires hydrofugées: premiers résultats, in: CNRS Paris (Ed.), Proceedings of Art et Chimie, les polymères, Paris, France, October 15–16, 2002, pp. 132–137.
4. C. Urzi, F. De Leo, Evaluation of the efficiency of water-repellent and biocide compounds against microbial colonization of mortars, International Biodeterioration and Biodegradation 60 (1) (2007) pp.25–34.
5. M.P. Nugari, O. Salvadori, Biocides and treatment of stone: limitations and future prospects, in: R.J. Koestler, V.H. Koestler, A.E. Charola, F.E. Nieto-Fernande (Eds.), Proceedings of Art, Biology and Conservation: Biodeterioration of Works of Art, New-York, USA, June 13–15, 2003, pp. 519–535.