Follow-up spectroscopy of SDSS changing-look QSOs
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https://b2find.eudat.eu/dataset/f3c7fc75-d6a5-5b1d-a563-c8bd1ec891a9
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Active galactic nuclei (AGNs) that show strong rest-frame optical/UV variability in their blue continuum and broad line emission are classified as changing-look AGN, or at...
