1. W.B. Colson, A. Todd, G.B. Neil, Nucl. Instr. and Meth. A 483 (2002) II-9.
2. A.E. Siegman, Lasers, University Science Books, Sausalito, CA, 1986 (Chapter 19).
3. W.B. Colson, in: W.B. Colson, C. Pellegrini, A. Renieri (Eds.), Laser Handbook, Vol. 6, North-Holland, Amsterdam, 1990 (Chapter 5).
4. First operation of an FEL in same-cell energy recovery mode
5. Simulations of the 100kW TJNAF FEL using a short Rayleigh length