Key points are not available for this paper at this time.
These are the data products for the paper "The Chandra Deep Field North Survey. XIII. 2 Ms Point-Source Catalogs", Alexander D.M., Bauer F.E., Brandt W.N., Schneider D.P., Hornschemeier A.E., Vignali C., et al., 2003, AJ, 126, 539
Alexander et al. (Thu,) studied this question.
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