References
- Dersch, F., Chimia, 1968,22,353.
- Carroll, B. H. and Hubbard, D., U.S. Bur. Stand. J. Res., 1934, 12,329.
- Mitchell, J. W., Scientific Photography, ed. H. Sauvenier, Pergamon 1962, p.226.
- Balls, A. and Harvey, J. F., J. Photo Sci., 1967, 15,258.
- Spracklen, D. M., J. Photo Sci., 1967, ]5, 249.
- Cash, D. J., J.Phot.Sci., 1972,20, 19.
- Otto, R., Berichte, 1882,15, 129.
- BUller, J. N., Janie Equilibrium, Addison.Wesley, 1964, p.292.