Reidegeld, Frank2008-10-272008-10-272008-10-27http://hdl.handle.net/2003/2581710.17877/DE290R-15769enExzeptionelle HolonomieEinstein-Metriken510Spin(7)-manifolds of cohomogeneity onedoctoral thesisurn:nbn:de:hbz:290-2003/25817-2