Borisov, A. G.Chulkov, E. V.Echenique, P. M.Gauyacq, J. P.Kazansky, A. K.Silkin, V. M.2004-12-102004-12-1020012001http://hdl.handle.net/2003/1813510.17877/DE290R-12080enThe American Physical SocietyPhysical Review Letters530Long-Lived Excited States at Surfaces: Cs/Cu(111) and Cs/Cu(100) Systems10.1103/PhysRevLett.86.488article (journal)