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most citedThe HELLAS2XMM 1dF survey: on the nature of high X-ray to optical flux ratio sources

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astro-ph2002

On the nature of X-ray Bright Optically Normal galaxies

A. Comastri, M. Brusa, P. Ciliegi +10

Multiwavelength observations of the hard X-ray selected sources by Chandra and XMM-Newton surveys have significantly improved our knowledge of the objects responsible of the hard X…