1. Department of Organic Chemistry, Institute of Chemistry, Faculty of Science; P. J. Šafárik University; Košice Slovak Republic
2. Department of Inorganic Chemistry, Institute of Chemistry, Faculty of Science; P. J. Šafárik University; Košice Slovak Republic
3. Centre of the Region Haná for Biotechnological and Agricultural Research, Department of the Phytochemistry, Faculty of Science; Palacký University; Olomouc Czech Republic
4. Institute of Geotechnics; Slovak Academy of Sciences; Košice Slovak Republic
5. Laboratory of NMR, Institute of Chemistry, Faculty of Science; P. J. Šafárik University; Košice Slovak Republic