1. Istituto di Fisica Applicata “Nello Carrara”, Consiglio Nazionale delle Ricerche, Florence, Italy
2. Science & Engineering in Arts Heritage and Archaeology Centre for Doctoral Training, University of Brighton, Brighton, UK
3. Museum Conservation Institute, Smithsonian Institution, Washington, DC, USA
4. Opificio delle Pietre Dure, Florence, Italy
5. Gallerie degli Uffizi, Florence, Italy
6. Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Caparica, Portugal