1. Laboratory of Technologies for Heritage Materials, Institute of Chemistry, University of Neuchâtel, 2000 Neuchâtel, Switzerland
2. Laboratoire de Conservation-Restauration Arc’Antique, 44300 Nantes, France
3. Haute Ecole Arc Conservation Restauration, University of Applied Sciences and Arts Western Switzerland HES-SO, 2000 Neuchâtel, Switzerland
4. Archaeological Service of Canton Bern, 3001 Bern, Switzerland
5. Swiss National Museum, Collection Center, 8910 Affoltern am Albis, Switzerland