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We comment on the recent manuscript by Raines et al. [arXiv:0905.0269v2] (nowpublished in Nature, vol. 463, p. 214-217, 2010), which suggests that incertain conditions a single diffraction measurement may be sufficient toreconstruct the full three-dimensional density of a scatterer. We show thatpast literature contains the tools to assess rigorously the feasibility of thisapproach. We question the formulation of the reconstruction algorithm used bythe authors and we argue that the experimental data used as a demonstration isnot suitable for this method, and thus that the reconstruction is not valid.  This second version was produced for documentation purposes. In addition tothe minimally modified original comment, it includes in appendix a subsequentreply to one of the authors (J. Miao).

Feasibility of 3D reconstructions from a single 2D diffraction measurement