1. Ljungberg SA (1996) Proc SPIE 2766:32–49
2. Amoroso VGG, Fassina V (1983) Stone decay and conservation. Elsevier, Lausanne
3. van Hees LRPJ, Binda IL, Papayianni I, Toumbakari E (2004) Mater Struct 37:664–648
4. Matteini M (1987) In: Cather S (ed) Proceedings of a symposium the conservation of wall paintings. London, UK, pp 13–16
5. Grinzato E, Bison PG, Marinetti S (2002) J Cult Herit 3:21–29