1. Institute for Conservation and Valorization of Cultural Heritage (ICVBC) – National Research Council
2. 50019 Sesto Fiorentino – Florence
3. Italy
4. 20125 Milan
5. CRIST
6. University of Florence
7. Sesto Fiorentino - Florence
8. Chemical Department “Ugo Schiff”–University of Florence
9. 50019 Sesto Fiorentino –Florence
10. Centro di Servizi di Microscopia Elettronica e Microanalisi (M.E.M.A)
11. 3 r - 50121 Florence
12. Earth Sciences Department-University of Florence
13. 50121 Florence