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Redshifted broad absorption line quasars found via machine-learned spectral similarity

Itamar Reis, Dovi Poznanski and Patrick B Hall
Monthly Notices of the Royal Astronomical Society 480 (3) 3889 (2018)
https://doi.org/10.1093/mnras/sty2127

A High Space Density of L* Active Galactic Nuclei at z ∼ 4 in the COSMOS Field

K. Boutsia, A. Grazian, E. Giallongo, F. Fiore and F. Civano
The Astrophysical Journal 869 (1) 20 (2018)
https://doi.org/10.3847/1538-4357/aae6c7