1. S. Boggs, D. G. Livermore, M. G. Seitz,J. Macromol. Sci. Rev. Macromol. Chem. Phys. 1985,C25, 599.
2. R. F. Christman, E. T. Gjessing (eds.),Aquatic and Terrestrial Humic Materials, Ann Arbor Science, Michigan, 1983.
3. J. Buffle,Complexation Reactions in Aquatic Systems: An Analytical Approach, Ellis Horwood, Chichester, 1988.
4. M. Hiraide,Anal. Sci. 1992,8, 453.
5. T. M. Florence,Trends Anal. Chem. 1983,2, 162.