%0 conference lecture %@ %A Hertlein, F., Wiesmann, J., michaelsen, C., Stoermer, M., Seifert, A. %D 2007 %J International Congress on Optics and Optoelectronics 2007, Damage to VUV, EUV, and X-ray Optics %T State-of-the-art thin film X-ray optics for synchrotrons and FEL sources %U %X