Delgado-Barrio, G.Gianturco, F. A.González-Lezana, T.Miret-Artés, S.Rubayo-Soneira, J.2004-12-272004-12-2720012001http://hdl.handle.net/2003/1964310.17877/DE290R-2351enThe American Physical SocietyPhysical Review Letters53010.1103/PhysRevLett.86.4190article (journal)