1. Department of Urban and Environmental Sociology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
2. Department of Geography, Humboldt-Universität zu Berlin, Berlin, Germany
3. MTA-SZTE Research Group on Geography Teaching and Learning, University of Szeged, Szeged, Hungary
4. IRI THESys, Humboldt-Universität zu Berlin, Berlin, Germany