| Reference |
P. Noble, A. van Loon and J.J. Boon: Chemical changes in old master paintings II: darkening due to increased transparency as a result of metal soap formation processes In: 14th triennial meeting The Hague, 12-16 September 2005 : ICOM Committee for Conservation : preprints volume 1 /ed. I. Verger, James & James, 2005. - pp. 496-503 |
