1. LEGOS UMR 5566 CNES/CNRS/IRD/Toulouse University Toulouse France
2. IMAU Department of Physics Utrecht University Utrecht The Netherlands
3. UMR 5805 EPOC Bordeaux University Bordeaux France
4. Department of Geophysics Concepción University Concepción Chile
5. UMR 7194 Muséum national d’Histoire naturelle Paris France