1. Commissariat a l'Energie Atomique; CEA/DASE/LDG; Bruyères-le-Châtel France
2. Comprehensive Nuclear-Test-Ban Treaty Organization Provisional Technical Secretariat/International Data Centre; Vienna International Centre; Vienna Austria
3. Hawaii Institute of Geophysics and Planetology; University of Hawai'i at Manoa; Honolulu Hawaii USA
4. E.O. Hulburt Center for Space Research; Naval Research Laboratory; Washington, D. C. USA
5. Federal Institute of Geosciences and Natural Resources; Hannover Germany