Author(s):
1. Stevan Armaković, Serbia
2. Sanja J. Armaković, University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental, Serbia
3. Svetlana Pelemiš, Faculty of Technology - University of East Sarajevo,
Republic of Srpska, Bosnia and Herzegovina
4. Blanka Škipina,
Republic of Srpska, Bosnia and Herzegovina