1. Division of Geography and Tourism, Department of Earth and Environmental Sciences, KU Leuven – University of Leuven, Leuven, Belgium
2. Department of Economic Geography, Faculty of Spatial Sciences, University of Groningen, Groningen, the Netherlands
3. Department of Cultural Geography, Faculty of Spatial Sciences, University of Groningen, Groningen, the Netherlands
4. Het Hogeland College, Warffum, The Netherlands