Gerritsen, J. W.Kemerink, M.Koenraad, P. M.Sauthoff, K.Wolter, J. H.van Kempen, H.2004-12-142004-12-1420012001http://hdl.handle.net/2003/1864710.17877/DE290R-6383enThe American Physical SocietyPhysical Review Letters530Optical Detection of Ballistic Electrons Injected by a Scanning-Tunneling Microscope10.1103/PhysRevLett.86.2404article (journal)