1. Principles of Color Technology, 2nd edn;Billmeyer,1981
2. Publication 15.2, Colorimetry, 2nd edn;CIE,1986
3. Color and Its Reproduction (Graphics Arts Technical Foundation, 4615 Forbes Avenue, Pittsburgh, PA 15213);Field,1988
4. Measuring Colour, 2nd edn;Hunt,1991
5. The Measurement of Appearance, 2nd edn;Hunter,1987