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Nicholas Eastaugh (2004). The pigment compendium: a dictionary of historical pigments. Amsterdam: Elsevier Butterworth-Heinemann. ISBN0-7506-5749-9. OCLC56444720.
Finlay, Victoria (2002). Color : a natural history of the palette. New York: Ballantine Books. ISBN0-345-44430-2. OCLC51302192.