1. I. SATO, et al., Proceedings of the 12th Symposium on Accelerator Science and Technolog, 1999, pp. 37–39.
2. Construction and development of an UV free electron laser under the cooperation of Nihon U., KEK, PNC, ETL and Tohoku U.
3. Y. Hayakawa, et al., Proceedings of the 25th Linear Accelerator Meeting in Japan, Vol. 25, 2000, p. 358 (in Japanese).
4. A. Asami, et al., Proceedings of the Fifth Linear Accelerator Meeting in Japan, Vol. 5, 1980, p. 71 (in Japanese).
5. K. Yokoyama, et al., Proceedings of the 24th Linear Accelerator Meeting in Japan, Vol. 24, 1999, p. 359 (in Japanese).