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2. S. Udenfriend, “Fluorescence Assay in Biology and Medicine”, Academic Press, New York, N.Y., 1962.
3. G. M. Edelman and W. O. McClure, Accounts Chem. Res., 1, 65 (1968) and references therein.
4. R. A. Badley in “Modern Fluorescence Spectroscopy”, E. L. Wehry ed., Plenum Press, New York, N.Y., 1976.
5. “1980 Laser Focus Buyers’ Guide, 15th Edition”, Advanced Technology Publications, Inc., Newton, MA, 1980.