1. Međimurske Vode D.O.O., 40000 Čakovec, Croatia
2. Faculty of Sciences and Mathematics, University of Niš, 18000 Niš, Serbia
3. Faculty of Electrical Engineering and Computer Science, University of Maribor, 2000 Maribor, Slovenia
4. Faculty of Geotechnical Engineering, University of Zagreb, 42000 Varaždin, Croatia
5. Department of Chemistry, University of Osijek, 31000 Osijek, Croatia
6. Department of Civil Engineering, University North, 42000 Varaždin, Croatia
7. Faculty of Chemical Engineering and Technology, University of Zagreb, 10000 Zagreb, Croatia