306 citations · 1.2k across the 19 of their papers we have counts for
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Marie-Luise Menzel, Andrea Merloni, Antonis Georgakakis +10
This paper presents a survey of X-ray selected active galactic nuclei (AGN) with optical spectroscopic follow-up in a ∼18deg2 area of the equatorial XMM-XXL north fi…