1. Hollingsworth, M.W.,J. Am. Oil Chem. Soc. 55:49 (1978).
2. Nagarajan, M.K., and H.L. Paine, Ibid.:1475 (1984).
3. Van Wazer, J.R.,Phosphorus and Its Compounds, Vol. I, Interscience, New York, 1958, p. 414.
4. Hurst, T.L., Ibid., Vol. II, edited by Van Wazer, J.R., Interscience, New York, 1958, p. 1213.
5. Harris, J.C., and J.R. Van Wazer, Ibid., Vol. II edited by Van Wazer, J.R., Interscience, New York, 1958, p. 1732.