%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 %N %P %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