Baldo, P. M.Birtcher, R. C.Donnelly, S. E.Funk, L.Rehn, L. E.2004-12-032004-12-0320012001http://hdl.handle.net/2003/162810.17877/DE290R-11393enThe American Physical SocietyPhysical Review Letters530Origin of Atomic Clusters during Ion Sputtering10.1103/PhysRevLett.87.207601article (journal)