1. University of Texas at Austin; Austin Texas USA
2. Laboratoire de Physique des Interactions Ioniques et Moleculaires; Centre National de la Recherche Scientifique/Aix-Marseilles Universities; Marseilles France
3. National Institute for Fusion Science; Toki Japan
4. Institute of Physics of the Earth; Moscow Russia
5. Space Research Institute; Moscow Russia
6. Department of Automatic Control and Systems Engineering; University of Sheffield; Sheffield UK