1. See, for example, W. E.Newton, in Studies in Inorganic Chemistry, eds. A. Müller and B. Krebs, Elsevier, Amsterdam, 1984, vol. 5, p. 409;
2. J. M. Berg and R. H.Holm, Metal Ions in Biology, ed. T. G. Spiro, Wiley, New York, 1982, vol. 4, ch. 1.
3. See, for example, O.Weisser and S.Landa, Sulfide Catalysts: Their Properties and Applications, Pergamon, New York, 1973;
4. J. R. Dilworth , ref. 1(a), p. 141;
5. A. G. Wedd , ref. 1(a), p. 181;