1. Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9746 AG Groningen, The Netherlands
2. Faculty of Engineering and Natural Sciences, Tampere University, FI-33101 Tampere, Finland
3. European Laboratory for Non Linear Spectroscopy (LENS), via N. Carrara 1, 50019 Sesto Fiorentino, Italy
4. ICCOM-CNR, via Madonna del Piano 10, 50019 Sesto Fiorentino, FI, Italy
5. Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
6. Institute for Molecules and Materials, FELIX Laboratory, Radboud University, Toernooiveld 7c, 6525 ED, Nijmegen, The Netherlands
7. Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 751 20 Uppsala, Sweden