1. Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, University of Novi Sad, Novi Sad, Serbia
2. Faculty of Agriculture, University of Novi Sad, Novi Sad, Serbia
3. Technical Faculty ‘Mihajlo Pupin’, University of Novi Sad, Zrenjanin, Serbia
4. Polytechnic Institute of Viana do Castelo, School of Technology and Management, 4900-348 Viana do Castelo, Portugal