1. Space Research Institute (IKI), Moscow, Russia.
2. Department of Physics, University of Oxford, Oxford, UK.
3. Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS/CNRS), Paris, France.
4. L’Institut de Recherche en Astrophysique et Planétologie (IRAP/CNRS), Toulouse, France.
5. Main Astronomical Observatory (MAO NASU), Kyiv, Ukraine.
6. LPAP, STAR Institute, Université de Liège, Liège, Belgium.
7. Royal Belgian Institute of Space Aeronomy (BIRA-IASB), Brussels, Belgium.
8. Open University, Milton-Keynes, UK.
9. Istituto di Astrofisica e Planetologia Spaziali (IAPS-INAF), Rome, Italy.
10. Instituto de Astrofìsica de Andalucía (IAA/CSIC), Granada, Spain.