Chen, TengMadey, John M. J.2004-12-142004-12-1420012001http://hdl.handle.net/2003/1868910.17877/DE290R-12621enThe American Physical SocietyPhysical Review Letters530Observation of Sub-Poisson Fluctuations in the Intensity of the Seventh Coherent Spontaneous Harmonic Emitted by a rf Linac Free-Electron Laser10.1103/PhysRevLett.86.5906article (journal)