1. W. Selig, Lawrence Livermore Laboratory Rept. UCID-17542 (July 21, 1977).
2. D. J. Glover and E. G. Kayser, Analyt. Chemistry40, 2055 (1968).
3. W. Selig, Lawrence Livermore Laboratory Rept. UCID-17412 (March 2, 1977).
4. E. Sawicki and T. W. Stanley, Analyt. Chim. Acta23, 551 (1960).
5. H. M. Hershenson, Ultraviolet and Visible Absorption Spectra Index for 1930?1954, New York: Academic Press. 1956.