1. Hahn-Meitner-Institut, Glienicker Strasse 100, D-14109 Berlin, Germany
2. Technical University Darmstadt, Institute of Chemical Technology, Petersenstrasse 20, D-64287 Darmstadt, Germany
3. Leipniz-Institut für Katalyse, Richard-Willstätter-Strasse 12, D-12489 Berlin, Germany
4. BESSY GmbH, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany