1. Department
of Organic Chemistry, Institute of Chemistry, University of Pannonia, Egyetem u. 10 (P.O.Box 158), H-8200 Veszprém, Hungary
2. János
Szentágothai Research Center, University of Pécs, Ifjúság
útja 20, H-7624 Pécs, Hungary
3. Department
of Chemistry, University of Namur, B-5000 Namur, Belgium
4. Department
of General and Inorganic Chemistry, Institute of Chemistry, University of Pannonia, H-8200 Veszprém, Hungary