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X‐Ray Spectral Survey of WGACAT Quasars. I. Spectral Evolution and Low‐Energy Cutoffs
Fiore et al. 1998 The Astrophysical Journal 492 79.
Caption: Fig. 2.
Redshift distribution of WGACAT radio‐quiet quasars (solid line) and radio‐loud quasars (dashed line) used in this paper.
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