Fröhling, Stefan [P:(DE-He78)f0144d171d26dbedb67c9db1df35629d] ; Arndt, Volker [P:(DE-He78)d023fdf423d87ee6c710e34dd7581fa0] ; Baumann, Michael [P:(DE-He78)933f7d725ac87378f459623783585a1f]