1. University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, Belgrade, Serbia
2. Department of Pharmacognosy with the Medicinal Plant Garden, Medical University of Lublin, Lublin, Poland
3. University of Belgrade, Faculty of Biology, Institute of Botany and Botanical Garden „Jevremovac”, Belgrade, Serbia
4. Insitute of Pharmacognosy, Tokushima Bunri University, Tokushima, Japan