![Comoving Space Density of X‐Ray–selected Active Galactic Nuclei]()
Comoving Space Density of X‐Ray–selected Active Galactic NucleiSilverman, J. D.; Green, P. J.; Barkhouse, W. A.; Cameron, R. A.; Foltz, C.; Jannuzi, B. T.; Kim, D.‐W.; Kim, M.; Mossman, A.; Tananbaum, H.; Wilkes, B. J.; Smith, M. G.; Smith, R. C.; Smith, P. S. · The Astrophysical Journal · 2005