1. Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
2. Kurt Kitzing Co., Wallerstein, Germany
3. National Center for Natural Products Research, University of Mississippi, University, MS, USA
4. US Department of Agriculture, Agricultural Research Service, Natural Products Utilization Research Unit, University of Mississippi, University, MS, USA
5. CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
6. Biodiversity Division, Institute of Himalayan Bioresource Technology, Palampur, India
7. Department of Biochemistry and Microbiology, “Paisii Hilendarski” – University of Plovdiv, Plovdiv, Bulgaria
8. Department of Essential Oils, University of Food Technologies, Plovdiv, Bulgaria