1. Dip. Scienze; Università Roma TRE; Rome Italy
2. Department of Earth Sciences; University of Southern California; Los Angeles California USA
3. Eidgenössische Technische Hochschule Zürich; Zürich Switzerland
4. Consiglio delle Nazionale Ricerche; IGAG; Rome Italy
5. ISTEP, UPMC-CNRS; Paris France
6. Géosciences Rennes; Université de Rennes 1, CNRS; Rennes France
7. School of Geosciences; Monash University; Clayton Victoria Australia
8. Institute of Geography and Earth Science; Eötvös University; Budapest Hungary
9. Univ d'Orléans, ISTO; Orléans France
10. Istituto Nazionale di Geofisica e Vulcanologia; Italy
11. Department of Earth, Atmospheric, and Planetary Sciences; Massachusetts Institute Technology; Cambridge Massachusetts USA