1. Institute for
the Conservation and Valorization of Cultural Heritage (ICVBC), National Research Council, Via Cozzi 53, 20125, Milano, Italy
2. Central
Laser Facility, Research Complex
at Harwell, STFC Rutherford Appleton Laboratory,
Harwell Oxford, OX11 0QX, United Kingdom
3. Nofima-Norwegian Institute of Food, Fisheries and Aquaculture Research, PB 210, N-1431 Ås, Norway