1. Department of Power, Electronic and Telecommunication Engineering, University of Novi Sad, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
2. Department of Information Engineering and Computer Science, University of Trento, Via Sommarive 5, Povo, 38123 Trentino, Italy
3. Department of Biology and Ecology, University of Novi Sad, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia