Bigelow, N. P.Hagen, C. R.2004-12-032004-12-0320012001http://hdl.handle.net/2003/69710.17877/DE290R-6439enThe American Physical SocietyPhysical Review Letters530Comment on "Observation of Superluminal Behaviors in Wave Propagation"10.1103/PhysRevLett.87.059401article (journal)