1. Farming, Fertilizers and the Nitrate Problem;Addiscott,1992
2. Groundwater vulnerability and risk mapping for the Basaltic aquifer of the Azraq basin of Jordan using GIS, remote sensing and DRASTIC;Al-Adamat;Applied Geography,2003
3. Assessment of groundwater pollution vulnerability and modelling of the Kanye Wellfield in SE Botswana—a GIS approach;Alemaw;Physics and Chemistry of the Earth, Parts A/B/C,2004
4. Aller, L., Bennett, T., Lehr, J. H., Petty, R. J., 1985. DRASTIC : A Standardized System for Evaluating Groundwater Pollution Potential Using Hydrogeologic Settings. US EPA, Robert S. Kerr Environmental Research Laboratory, Ada, OK, EPA/600/2-85/0108, 163pp.
5. Almasri, M. N., Kaluarachchi, J. J., 2003. Regional variability of on-ground nitrogen loading due to multiple land uses in agriculture-dominated watersheds. In: Proceedings of the Seventh International Conference on Diffuse Pollution and Basin Management, Dublin, Ireland.