1. Eötvös Loránd University, Faculty of Science, Centre of Environmental Sciences, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
2. Budapest Business School University of Applied Sciences Faculty of Commerce, Catering and Tourism, Department of Methodology, Alkotmány u. 9–11, H-1054 Budapest, Hungary
3. Institute of Geological and Geochemical Research, MTA Research Centre for Astronomy and Earth Sciences, Budaörsi út. 45, H-1112 Budapest, Hungary