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Revealing X-ray obscured quasars in SWIRE sources with extreme mid-IR/optical flux ratios

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Description scientific article published in Astronomy and Astrophysics
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author: Carlotta Gruppioni  Giorgio Lanzuisi  Fabrizio Fiore  Chiara Feruglio  Cristian Vignali  Enrico Piconcelli 

Publication date February 24, 2009
Language English
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