1. Department of Biological and Chemical Sciences, University of Essex, Colchester, Essex CO4 3SQ, UK
2. Department of Organic Chemistry and Department of Physical Chemistry, Faculty of Natural Sciences, Comenius University, SK - 842 15 Bratislava, Slovak Republic
3. Institute of Chemistry, Karl Franzens University Graz, A - 8010 Graz, Austria
4. Department of Chemistry, University of Jyväskylä, FIN – 40351 Jyväskylä, Finland
5. Institute of Organic Chemistry, Yerevan State University, ARM – 375049 Yerevan, Armenia
6. Department of Organic Chemistry, Faculty of Natural Sciences, P. J. Šafárik University, SK – 04167 Košice, Slovak Republic
7. Insitute of Fine Organic Chemistry, NAS Republic of Armenia, ARM – 375014 Yerevan, Armenia