1. 1) T. H. James : “The Theory of the Photographic Process”, 4 th Ed., Macmillan Publishing Co., Inc. New York (1977)
2. 4) J. Griffiths : “Color and Constitution of Organic Molecules”, Academic Press, Inc. London (1976)
3. 5) J. Fabian and H. Hartmann : “Light Absorption of Organic Colorants”, Springer-Verlag Berlin (1980)
4. 6) K. Ven Kataraman : “The Chemistry of Synthetic Dyes”, Vol.II, p.1143, Vol.IV, p.212 Academic Press, Inc. London (1952)
5. 16) R. H. Sprague and J. H. Keller : Photographic Science and Engineering, 14,401 (1970)