X-Ray Fluorescence With a Krypton Gas Proportional Counter

X-ray fluorescent determinations of several trace elements in some standard geochemical samples

X-ray flux and anisotropy produced by galactic cosmic-ray electrons

X-ray flux concentrating optics for improving the performance of light element energy dispersive spectroscopy

X-Ray Flux from the Vela Pulsar

X-Ray Fluxes from Solrad 9 Satellite

X-ray fluxes of radio pulsars (Malov, 2003)

X-ray focusing using microchannel plates

X-ray focusing using microchannel plates

X-ray focusing with Wolter microchannel plate optics

X-ray follow-up observations of known transient INTEGRAL sources

X-ray follow-up to identify faint X-ray transients

X-ray follow-ups of hard X-ray magnetic Cataclysmic Variable candidates

X-ray follow-ups of TeV unID sources using Suzaku

X-ray form factors and the electronic structure of graphite

X-ray framing camera images of imploding targets

X-ray Galaxy Clusters as Cosmological Probes

X-Ray Grating Interferometry for Phase-Contrast Imaging and Optics Metrology Applications

X-ray Groups with Chandra and XMM: mass, entropy and AGN heating

X-ray halo around SU UMa.