1. D. Dyrssen, D. Jagner, and F. Wengelin,Computer Calculation of Ionic Equilibria and Titration Procedures, (Almquist and Wiksell), Stockholm, 1968) Chap. 2.
2. J.I. Watters and R. DeWitt,J. Am. Chem. Soc. 82, 1333 (1960).
3. D. Dyrssen and M. Wedborg inThe Sea, E.D. Goldberg, Ed., (Wiley-Interscience, New York, 1974) Vol. 5, Chap. 5.
4. P. Tsai and R.P. Cooney,Chem. Geo. 18, 187 (1976).
5. D.R. Turner and M. Whitfield,J. Electroanal. Chem. 103, 61 (1979).