Jasper, Heiko2009-10-212009-10-212009-10-21http://hdl.handle.net/2003/2646410.17877/DE290R-14478enElementarteilchenphysikBabar experimentSemileptonischer ZerfallB-Meson530First observation of the semileptonic decay B - -> D s + K - l - ny l with the BABAR detectordoctoral thesisurn:nbn:de:hbz:290-2003/26464-7