1. Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
2. Department of Analytical Chemistry, Uzhhorod National University, Uzhhorod, Ukraine
3. Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, Nyíregyháza, Hungary
4. Department of Chemistry, University of Nyíregyháza, Nyíregyháza, Hungary