1. Institute for the Application of Nuclear Energy—INEP, University of Belgrade, Banatska 31b, 11080 Zemun, Serbia
2. Faculty of Biology, Institute of Botany and Botanical Garden Jevremovac, University of Belgrade, Takovska 43, 11000 Belgrade, Serbia
3. Faculty of Science, Department of Botany, Institute of Biology and Ecology, Pavol Jozef Šafárik University in Košice, Mánesova 23, 040 01 Košice, Slovakia