1. Centre for Advanced Study (CAS) at the Norwegian Academy of Science and Letters, Oslo, Norway
2. Department of Physical and Theoretical Chemistry & Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
3. Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Oslo, Oslo, Norway
4. Laboratoire de Chimie et Physique Quantiques, UMR 5626 CNRS – Universitè Toulouse III (Paul Sabatier), Toulouse Cedex 09, France
5. Department of Chemistry, University of Helsinki, Helsinki, Finland
6. Institute for Theoretical Chemistry, University of Stuttgart, Stuttgart, Germany
7. Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study, Massey University Auckland, Auckland, New Zealand