1. C. D. Ritchie, inSolute-Solvent Interactions, J. F. Coetzee and C. D. Ritchie, eds. (Marcel Dekker, New York, 1969), p. 219.
2. J. E. Gordon,The Organic Chemistry of Electrolyte Solutions (Wiley-Interscience, 1975).
3. D. Feakins and P. J. Voice,J. Chem. Soc. Faraday Trans. 1,68, 1390 (1972).
4. R. G. Pearson,Hard and Soft Acids and Bases (Dowdon, Hutchinson and Ross, Stroudsburg, Philadelphia,1973).
5. A. K. Das and K. K. Kundu,J. Solution Chem. 5, 431 (1976).