Abstract
FOUR QSOs (PHL 957, Ton 1530, Parkes 0237–23, and 4C 05.34) are now known with complex absorption spectra; these have been interpreted1–5 as objects with multiple redshifts. It is disturbing that even with the use of up to 10 redshifts per object, 20% or more of the absorption lines which are definitely present with strength 2 or greater remain unidentified.
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COHEN, J. Physical Sciences: Multiple Redshifts in QSOs. Nature 237, 273 (1972). https://doi.org/10.1038/237273a0
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DOI: https://doi.org/10.1038/237273a0
