1. Richter A. Proc. EPAC96. Myers S, et al., editors. Bristol: IOP Publishing, 1996. p. 110.
2. First lasing of the Darmstadt cw free electron laser
3. Brunken M, Genz H, Gräf H-D, Khodyachykh S, Loos H, Richter A, Schweizer B, Stascheck A. Nucl Instrum Methods A 2002;475:II-63.
4. Komlas, private communication.
5. Power limits of a YAG:Er laser