Single pulse coherence measurements in the water window at the free-electron laser FLASH
D.D. Mai, J. Hallmann, T. Reusch, M. Osterhoff, S. Düsterer, R. Treusch, A. Singer, M. Beckers, T. Gorniak, T. Senkbeil, R. Dronyak, J. Gulden, O.M. Yefanov, A. Al-Shemmary, A. Rosenhahn, A.P. Mancuso, I.A. Vartanyants, T. Salditt