Title	Publication Date	Language	Citations
Cooling of neutron stars and X-ray observations	1981/03/01	English
First UV observations of the optical counterpart of the X-ray source 2S0114+650	1981/03/01	English
Hard X-ray balloon observations of compact galactic and extragalactic X-ray sources	1981/03/01	English
Optical properties of low-mass X-ray binaries	1981/03/01	English
Infrared photometry of the x-ray stars in cygnus OB2(VI Cygni): Preliminary results	1981/03/01	English
Highlights of results from HAKUCHO	1981/03/01	English
Variability of soft X-ray emission of EX Hydrae observed with Einstein Observatory	1981/03/01	English
Future programme of X-ray astronomy in Japan	1981/03/01	English
Optical identification of X-ray sources in the Einstein observatory medium and deep surveys	1981/03/01	English
X-ray emission from galactic jets	1981/03/01	English
Cosmic X-ray observations performed with a gas scintillation spectrometer	1981/03/01	English
The capabilities of a gas scintillation camera for cosmic X-ray astronomy	1981/03/01	English
Opening address ? 15th ESLAB symposium	1981/03/01	English
The X-ray luminosity function and source counts for seyferts	1981/03/01	English
Ultraviolet observations of the X-ray sources in the ETA garinae Nebula	1981/03/01	English
Ariel 6 observations of Cyg X-1 in the high state	1981/03/01	English
X-rays from active galactic nuclei ? Hard component	1981/03/01	English
X-ray absorption in circinus X-1 in the low state	1981/03/01	English
Periodic X-ray outbursts from A0535+26, 2S1145-619 and GX301-2	1981/03/01	English
X-ray binaries and stellar evolution	1981/03/01	English
Ariel 5 observations of GX 339-4	1981/03/01	English
X-ray emission from active galaxies	1981/03/01	English
Hard X-rays observation of her X-1	1981/03/01	English
UV observations of MV Lyrae	1981/03/01	English
NGC 4151 and MCG 8-11-11: Two X-ray seyfert galaxies with strong soft ?-ray emission	1981/03/01	English
Ultraviolet and optical observations of HDE 245770/ A 0535+26 system during an X-ray flare	1981/03/01	English
Observability of magnetically strongly shifted iron line emission from X-ray pulsars	1981/03/01	English
On the properties of 21 X-ray globular clusters in M31	1981/03/01	English
Optical observations of the X-ray source 2S0921-630	1981/03/01	English
A pseedo random mask telescope tor Spacelab	1981/03/01	English