Wilker, J. and Gruehn, D. 2017. The Potential of Contingent Valuation for Planning Practice. The Example of Dortmund Westpark. Raumforschung und Raumordnung | Spatial Research and Planning. 75, 2 (Apr. 2017), 171–185. DOI:https://doi.org/10.1007/s13147-016-0468-6.