1. Institute of Ion Physics and Applied Physics
2. University of Innsbruck
3. A-6020 Innsbruck, Austria
4. Departament de Química Física & Institut de Química Teòrica i Computacional (IQTCUB)
5. Universitat de Barcelona
6. E-08028 Barcelona, Spain
7. Institute for Basic Sciences in Engineering Science
8. Department of Physics and Astronomy
9. East Tennessee State University
10. Johnson City, USA