1. Physics Department, Institute for Energy Technology, NO-2027 Kjeller, Norway
2. School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
3. GKSS Research Centre, D-21502 Geesthacht, Germany
4. Laboratory for Neutron Scattering, PSI, CH-5232 Villigen, Switzerland
5. Adolphe Merkle Institut, University of Fribourg, CH-1700 Fribourg, Switzerland
6. Research Institute for Solid State Physics and Optics, Budapest-1525, Hungary
7. Fachbereich Chemie, Bergische Universität Wuppertal, D-42097 Wuppertal, Germany
8. Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal