Measurement of the wavefront of XUV sources S. Le Pape, Ph. Zeitoun, J.-F. Hergot, B. Carré, P. Dhez, M. François, M. Idir, H. Merdji, D. Ros, A. Carillon and P. Salières J. Phys. IV France, 11 PR2 (2001) Pr2-533-Pr2-536 DOI: 10.1051/jp4:20012104