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    • A large, uniform sample of X-ray emitting AGN: selection approach and an initial catalog from the ROSAT All-Sky and Sloan Digital Sky Surveys 

      Anderson, Scott; Voges, Wolfgang; Margon, Bruce; Trumper, Joachim; Agueros, Marcel; Boller, Thomas; Collinge, Matthew; Homer, Lee; Stinson, Gregory; Strauss, Michael; Annis, James; Gomez, Percy; Hall, Patrick; Nichol, Robert; Richards, Gordon; Schneider, Donald; Vanden Berk, Daniel; Fan, Xiaohui; Ivezic, Zeljko; Munn, Jeffrey; Newberg, Heidi Jo; Richmond, Michael; Weinberg, David; Yanny, Brian; Bahcall, Neta; Brinkmann, Jonathan; Fukugita, Masataka; York, Donald (American Astronomical Society - The Astronomical Journal, 2003-11)
      Many open questions in X-ray astronomy are limited by the relatively small number of objects in uniform optically-identified and observed samples, especially when rare subclasses are considered, or when subsets are ...