1. Department of Forest Protection and Wildlife Management; Faculty of Forestry and Wood Technology; Mendel University; Brno Czech Republic
2. Department of Science; Faculty of Liberal Arts and Science; Kasetsart University; Nakhon Pathom Thailand
3. Department of Chemistry; Faculty of Liberal Arts and Science; Kasetsart University; Nakhon Pathom Thailand
4. Department of Forest Ecology; Faculty of Forestry and Wood Technology; Mendel University; Brno Czech Republic