Article
The Astrophysical Journal  (2003)

Very High Redshift X-Ray–selected Active Galactic Nuclei in the Chandra Deep Field–North

Barger, A. J.; Cowie, L. L.; Capak, P.; Alexander, D. M.; Bauer, F. E.; Brandt, W. N.; Garmire, G. P.; Hornschemeier, A. E.