1. Alloway, B. J. (2013). Bioavailability of elements in soil. In O. Selinus, B. Alloway, J. A. Centeno, R. B. Finkelman, R. Fuge, U. Lindh, & P. Smedley (Eds.), Essentials of medical geology: impacts of the natural environment on public health (pp. 347–372). Amsterdam: Elsevier Academic Press.
2. Beaton, J. D., Peterson, H. B., & Bauer, N. (1960). Some aspects of phosphate adsorption by charcoal. Soil Science Society of America Proceedings, 24, 340–345.
3. Borggaard, O. K. (2011). Does phosphate affect soil sorption and degradation of glyphosate? A review. Trends in Soil Science & Plant Nutrition, 2, 16–27.
4. Brodowski, S., John, B., Flessa, H., & Amelung, W. (2006). Aggregate occluded black carbon in soil. European Journal of Soil Science, 57, 539–546.
5. Cáceres-Jensen, L., Gan, J., Báez, M., Fuentes, R., Escudey, M. (2009). Adsorption of glyphosate on variable-charge, volcanic ash-derived soils. Journal of Environmental Quality. doi: 10.2134/jeq2008.0146 .