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2. ASTM Standards on Color and Appearance Measurement, 5th ed., ASTM, Philadelphia, PA, 1995
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4. Design and testing of a two-monochromator reference spectrofluorimeter for high-accuracy total radiance factor measurements
5. J.C. Zwinkels, D.S. Gignac, in: C. Burgess, D.G. Jones (Eds.), Spectrophotometry, Luminescence and Colour, Science and Compliance, Elsevier, Amsterdam, 1995, p. 97