Du, TengdaHuang, JieLuo, Weili2004-12-032004-12-0320012001http://hdl.handle.net/2003/70410.17877/DE290R-3613enThe American Physical SocietyPhysical Review Letters530Reply: Luo, Du, and Huang10.1103/PhysRevLett.87.059802article (journal)