
Quasar survey at high redshifts
[1]"Probing the Faint End of the Quasar Luminosity Fucntion at z~4 in the COSMOS Field" Ikeda et al. 2011, ApJ, 728, L25
[2]"Constraints on the Faint End of the Quasar Luminsoity Function at z~5 in the COSMOS Field" Ikeda et al. 2012, ApJ, accepted
[3]"The Population of High-Redshift Active Galactic Nuclei in the Chandra-COSMOS Survey" Civano et al. 2011, ApJ, 741, 91
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