1. Chemistry; University of Florence; Via della Lastruccia 3 Sesto Fiorentino Florence Italy
2. Chemistry; City College of New York; Convent Ave. at 138th Street New York NY 10031 USA
3. Science; Metropolitan Museum of Art; 1000 Fifth Avenue New York NY USA
4. Department of Scientific Research; The Metropolitan Museum of Art; New York NY USA
5. Department of Chemistry; University of Florence; via della Lastruccia, 3 Sesto Fiorentino Florence 50019 Italy
6. Contructions and Restoration; University of Florence; Florence Italy
7. European Institute; European Laboratory for Non-linear Spectroscopy (LENS), University of Florence; Via Nello Carrara 1 50019 Firenze Italy
8. Chemistry Department; University of Florence; Florence Italy