Fig. 14.
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Γ–z diagram. The symbols are the same as in Figure 5. Open diamond, inverted triangle, hexagon, square, triangle, circle, and pentagon plots denote X-ray detected quasars from Vignali et al. (2005), Piconcelli et al. (2005), Shemmer et al. (2006), Just et al. (2007), Nanni et al. (2017), Vito et al. (2019), and Wang et al. (2021), respectively.
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