1. F.J. Stevenson, Humus Chemistry. Genesis, Composition, Reactions, second ed., Wiley Interscience, New York, Chichester, Brisbane, 1994.
2. The role of sorbed humic substances on the distribution of organic and inorganic contaminants in groundwater
3. G. Sposito, The Chemistry of Soils, Oxford University Press, Oxford, 1989.
4. M.B. McBride, Environmental Chemistry of Soils, Oxford University Press, Oxford, 1994.
5. Adsorption of NOM onto Activated Carbon: Effect of Surface Charge, Ionic Strength, and Pore Volume Distribution