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Yue Qiao, Roy S. Berns, Lisa Reniff, Ethan Montag, [Visual determination of hue suprathreshold color-difference tolerances.](<https://doi.org/10.1002/(SICI)1520-6378(199810)23:5<302::AID-COL6>3.0.CO;2-%23>) Emailed berns@cis.rit.edu (2018-02-12).
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Dong-Ho Kim, Eun Kyoung Cho, Jae Pil Kim, Evaluation of CIELAB-based colour-difference formulae using a new dataset. Emailed donghokim@korea.com (2018-02-13).
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Data from Color difference evaluation for wide-color-gamut displays