?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Schwalfenberg&rft.au=Schwalfenberg%2C+Steffen&rft.aufirst=Steffen&rft.degree=Master&rft.date=2013&rft.title=Area-oriented+coastal+protection+-+A+theoretical+and+stakeholder+based+analysis+of+possible+synergies+and+obstacles+on+the+German+North-Sea+coast