1. Department of Physics and Astronomy
2. University of Southern California
3. Los Angeles
4. USA
5. Institut für Ionenphysik und Angewandte Physik
6. Universität Innsbruck
7. A-6020 Innsbruck
8. Austria
9. Department of Physical Chemistry
10. University of Chemistry and Technology
11. Prague 6
12. Czech Republic
13. J. Heyrovský Institute of Physical Chemistry v.v.i.