Vertically Focusing Double Mirror Device (VF-2M) for the ESRF Beamline ID12A R. Signorato, C. Goulon-Ginet, J. Goulon, A. Rogalev, Ph. Marion et J.-J. FerméJ. Phys. IV France, 7 C2 (1997) C2-341-C2-342DOI: https://doi.org/10.1051/jp4/1997012