1. What is Metamerism?
2. Critical review of definitions of metamerism
3. and , Color in Business, Science and Industry, 3rd ed., Wiley, New York, 1975.
4. Comparative List of Color Terms, Inter-Society Color Council, Rochester, NY, 1949.
5. Basic Color: An Interpretation of the Ostwald Color System, Paul Theobald, Chicago, 1948.