1. Antwerp X-ray Instrumentation and Imaging Laboratory, Department
of Chemistry, University of Antwerp, Universiteitsplein
1, B-2610 Wilrijk, Belgium
2. Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, NL-2628CD Delft,
The Netherlands
3. Laboratoire
du Centre de Recherche et de Restauration des Musées de France, CNRS UMR 171, Palais du Louvre, Porte des Lions, 14,
Quai François Mitterand, F-75001 Paris, France
4. European Synchrotron Radiation Facility, Polygone Scientifique Louis Néel, 6,
rue Jules Horowitz, F-38000 Grenoble, France
5. Deutsches Elektronen-Synchrotron, P06 Beamline, PETRA-III, Notkestrasse 85, D-22607 Hamburg, Germany
6. Conservation Department, Kröller-Müller Museum, Houtkampweg 6,
NL-6731AW Otterlo, The Netherlands