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The XMM-Newton view of IRAS 09104+4109: evidence for a changing-look Type 2 quasar?

E. Piconcelli, F. Fiore, F. Nicastro, S. Mathur, M. Brusa, A. Comastri and S. Puccetti

A&A, 473 1 (2007) 85-89

DOI: https://doi.org/10.1051/0004-6361:20077630

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