1. BAUMAN, R.P., (1962) Absorption Spectroscopy, John Wiley & Sons, New York, 14.
2. BORST, P. and Colpa-Boonstra, J.P., (1962), Biochim. Biophys. Acta, 56, 216.
3. BOWEN, E.J., and Wokes, F., (1953), Fluorescence of Solutions, Longmans, Green, London.
4. CHANCE, B., and Legallais, V. (1959), Rev. Sci, Instr., 30, 732.
5. CHANCE, B., (1962), Ann. N.Y. Acad. Sci., 97, 431.