Laarmann, T.Möller, T.Von Haeften, K.Wabnitz, H.2004-12-032004-12-0320012001http://hdl.handle.net/2003/126010.17877/DE290R-4193enThe American Physical SocietyPhysical Review Letters530Observation of Atomiclike Electronic Excitations in Pure 3He and 4He Clusters Studied by Fluorescence Excitation Spectroscopy10.1103/PhysRevLett.87.153403article (journal)