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1986MNRAS.218..457F - Mon. Not. R. Astron. Soc., 218, 457-464 (1986)
Some implications of excess soft X-ray emission from Seyfert 1 galaxies.
FABIAN A.C., GUILBERT P.W., ARNAUD K.A., SHAFER R.A., TENNANT A.F. and WARD M.J.
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Simbad objects: 2
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