1. IBI-4:Biomacromolecular Systems and Processes, Forschungszentrum Jülich GmbH, D-52428 Jülich, Germany
2. University of Twente, Computational Chemical Physics, Postbus 217, 7500 AE Enschede, The Netherlands
3. Chemistry Department – Physical Chemistry, University Cologne, D-50939 Cologne, Germany