189 citations · 291 across the 3 of their papers we have counts for
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W. Brinkmann, D. Grupe, G. Branduardi-Raymont +1
In a ~ 20 ksec XMM-Newton observation the X-ray transient radio-quiet quasar PG 0844+349 was found in a historically high state compared to previous X-ray observations. The quasar…