1. Bolt, G. H. and de Haan, F. A., 1965, Interactions between anions and soil constituents, jui: “Technical Reports Series”, 48:94, International Atomic Energy Agency, Vienna.
2. Bolt, G. H. and Warkentin, B. P., 1958, The negative adsorption of anions by clay suspensions, Kolloid Z., 156:41.
3. Bower, C. A. and Goertzen, J. O., 1955, Negative adsorption of salts by soils, Soil Sci. Amer. Proc. 19:147.
4. Cook, J. M. and Miles, D. L., 1979, Methods for the analysis of groundwater, Institute of Geological Sciences, Internal Report No. WD/ST/79/5.
5. Edwards, D. G. and Quirk, J. P., 1962, Repulsion of chloride by montmorillonite, J. Colloid. Sci., 17:872.