Coherent X-rays at MAMI W. Lauth, H. Backe, O. Kettig, P. Kunz, A. Sharafutdinov and T. Weber Eur. Phys. J. A, 28 1 (2006) 185-195 Published online: 31 May 2006 DOI: 10.1140/epja/i2006-09-019-0