1. Quantum theory of SASE FEL
2. Quantum regime of free electron lasers starting from noise
3. Technical Design Report of the European X-ray Laser Project XFEL available at 〈http://xfel.desy.de/tdr/tdr〉.
4. The LCLS Design Study Group: LCLS Design Study Report, SLAC-R521, Stanford, 1998 and 〈http://www-ssrl.slac.stanford.edu/lcls/CDR〉.
5. T. Shintake, Status of the SCSS Test Accelerator and XFEL Project in Japan, EPAC’06, Edinburgh, 2006 and 〈http://www-xfel.spring8.or.jp〉.