%0 conference lecture %@ %A Stoermer, M., Siewert, F., Buchheim, J., Pilz, A., Kuhlmann, M., Ploenjes, E., tiedtke, K. %D 2014 %J Advances in X-Ray/EUV Optics and Components IX %T Preparation and characterization of X-ray mirrors with three single layers of a-C, B4C and Ni onto two 820 mm long Si substrate %U %X