The X-Ray Spectral and Optical/ir Flux Variability in Magnetars
The X-ray Spectral and Optical/IR Flux Variability in Magnetars
The X-Ray Spectrometer on the MESSENGER Spacecraft
The X-ray spectrum of QSO 0241+622
The X-Ray Structure of Old, Fossil Galaxy Groups
The X-Ray Structure of Old, High Luminosity Fossil Galaxy Groups
The X-Ray Structure of the Prototype Fossil Group
The X-ray Telescope for the SWIFT Gamma-Ray Burst Mission
The X-ray View of Compact Radio Sources
The X-type asteroids: spectroscopic results
The XBS AGN sample: a tool to study the spectral properties of the different kinds of AGN
The XENON Dark Matter Project: Status of the XENON100 Phase
The Xenon Record of Extinct Radioactivities in the Earth
The XENON100 Dark Matter Experiment
The XENON100 Dark Matter Experiment
The XENON100 Dark Matter Experiment
The XEUS focal plane instruments
The XID Results Database of the XMM-Newton Survey Science Center
The XMM Large Scale Structure Survey and its multi-λ follow-up
The XMM-Newton 2nd Incremental Source Catalogue (2XMMi) (XMM-SSC, 2008)