Hard X-ray photon index as an indicator of bolometric correction in active galactic nuclei

Hard X-ray Polarimetry With Wide Band Laue Lens Telescopes

Hard X-ray properties of blazars

Hard X-Ray Properties of Groups of Galaxies as Observed with ASCA

Hard X-ray properties of magnetic cataclysmic variables

Hard X-ray Properties of the Merging Cluster Abell 3667 as Observed with Suzaku

Hard X-ray pulse profile and period evolution of AO535 + 26 and GX 1 + 4 as observed by the Franco-Soviet Signe satellite experiments

Hard X-ray pulses from 4U 0900-40

Hard X-ray Radiation in the Coma Cluster

Hard X-Ray Radiation in the Coma Cluster Spectrum

Hard X-ray sky survey with the SIGMA telescope aboard GRANAT observatory

Hard X-ray Solar Bursts Observed from the OSO-6 Satellite

Hard X-Ray sources observed by INTEGRAL/IBIS and their science

Hard X-ray Spectra and Positions of Solar Flares observed by RHESSI: photospheric albedo, directivity and electron spectra

Hard X-ray spectra from gap accretion onto neutron stars

Hard X-ray spectra of anomalous X-ray pulsars

Hard X-Ray Spectra of Broad-Line Radio Galaxies from the Rossi X-Ray Timing Explorer

Hard X-ray spectral variability of the brightest Seyfert AGN in the Swift/BAT sample

Hard X-Ray Spectrum from West Lobe of Radio Galaxy Fornax A Observed with Suzaku

Hard X-ray Spectrum of Mkn 421 during the Active Phase