1. Metameric “Color Rule” matches of normal, colour deficient, cataractic, and aphakic observers;Kalmus;Ann Hum Genet,1972
2. Color education for the dental profession, thesis;Bergen,1975
3. Determination of the sensitiveness of the eye to differences in the saturation of colors;Martin,1933
4. Color matching in dentistry;Sproull;J Prosthet Dent,1973
5. Color matching in dentistry;Sproull;J Prosthet Dent,1973