1. Institute of Chemistry University of Tartu Ravila 14a 50411 Tartu Estonia
2. Department of Materials and Environmental Technology Tallinn University of Technology Ehitajate tee 5 19086 Tallinn Estonia
3. Institute of Physics University of Tartu W. Ostwald Str. 1 50411 Tartu Estonia
4. Institute of Ecology and Earth Sciences University of Tartu Vanemuise 46 51014 Tartu Estonia
5. ICGM Univ. Montpellier, CNRS, ENSCM Montpellier 34095 France
6. Institut Universitaire de France (IUF) Paris 75231 France
7. Department of Chemistry Simon Fraser University 8888 University Drive Burnaby, BC V5A 1S6 Canada