SHIOZAWA, T. Classical Relativistic Electrodynamics-Theory of Light Emission and Application to Free Electron Lasers. 2004
http://sbfel3.ucsb.edu/www/fel_table.html
MARSI, M. Completion of the first phase of development of the European UV/VUV free-electron laser at ELETTRA. Synchrotron Radiation News. 2001, 14, 19-24
NUHN, H. D. LINAC-based short wavelength FELs : The challenges to be overcome to produce the ultimate X-ray source-X-ray laser. Synchrotron Radiation News. 2000, 13, 18-32