1. J. Arthur, G. Materlik, R. Tatchyn, H. Winick, The LCLS: a fourth generation light source using the SLAC linac, Rev. Sci. Instrum. 6(2) (1995).
2. H.-S. Kang, X-ray free electron laser project of Pohang Accelerator Laboratory, in: EFST Workshop on Compact X-ray Free-Electron Lasers 〈http://www.sinap.ac.cn/compactxfel10〉, 2010.
3. SPARX-FEL Technical Design Report V2.0 〈http://www.sparx-fel.it/index.php/en/the-sparx-fel-project/tdr〉, 2009.
4. M. Eriksson, et al., MAX IV, Conceptual Design Report 〈http://www.maxlab.lu.se/maxlab/max4/index.html〉.
5. T. Shintake, TUBM02, in: Proceedings of the APAC2001, Beijing, China, 2001.