1. Free-electron lasers with variable parameter wigglers
2. The structure of the sideband spectrum in free electron lasers
3. inProceedings of the Eighth International FEL Conference, Glasgow, Scotland, edited by M. Poole (North-Holland, Amsterdam, 1987), p. 226.
4. S. S. Yu, W. M. Sharp, W. M. Fawley, E. T. Scharlemann, A. M. Sessler, and E. J. Sternbach, in Ref. 2, p. 219.
5. Single-particle analysis of the free-electron laser sideband instability for primary electromagnetic wave with constant phase and slowly varying phase