Bienek, FabianBöhmer, ElisabethBroszeit, SebastianHölzgen, DanielJablkowski, BoguslawKruse, MichaelLöwen, AlexanderVengels, Thomas2011-01-142011-01-142011-01-14http://hdl.handle.net/2003/2757010.17877/DE290R-15893de004study thesis