X-ray phase contrast imaging at MAMI M. El-Ghazaly, H. Backe, W. Lauth, G. Kube, P. Kunz, A. Sharafutdinov and T. Weber Eur. Phys. J. A, 28 1 (2006) 197-208 Published online: 06 June 2006 DOI: 10.1140/epja/i2006-09-021-6