1. Reilly, J. M., [Care and Identification of 19th-Century Photographic Prints], Eastman Kodak, Rochester, New York, Reissue ed. (1986).
2. Stroebel, L., Compton, J., Current, I., and Zakia, R., [Basic Photographic Materials and Processes], Focal Press, 2nd ed. (2000).
3. Wyszecki, G. and Stiles, W., [Color Science: Concepts and Methods, Quantitative Data and Formulae], John Wiley & Sons, New York, 2nd ed. (1982).
4. Berns, R. S., [Billmeyer and Saltzman’s Principles of Color Technology], Wiley, 3rd ed. (2000).
5. Reflection densitometer;Laukaitis,1992