1. Aller, L., Bennett, T., Lehr, J.H., Petty, R.J. and Hackett, G. (1987) DRASTIC: A standardized system for evaluating groundwater pollution potential using hydrogeologic settings. NWWA/EPA Series EPA-600/2-87-035.
2. Babiker, I.S., Mohamed, A.A. and Hiyama, T. (2007) Assessing groundwater quality using GIS. Water Resource Management, v.21, pp.699–715.
3. Civita, M. (1993). Groundwater vulnerability maps: a review. In: Proc. IX symposium on pesticide chemistry “degradation and mobility of xenobiotics”, Placenza, Italy, October 11–13, 1993, Edizioni “Biagini” Lucca, Italy, pp.587–631.
4. Goldscheider, N. (2005) Karst groundwater vulnerability mapping: application of a new method in the Swabian Alb, Germany. Hydrogeol. Jour., v.13(4), pp.555–564.
5. Hölting, B., Haertle, T., Hohberger, K.H., Nachtigall, K.H., Villinger, E., Weinzierl, W. and Wrobel, J.P. (1995) Konzept zur Ermittlung der Schutzfunktion der Grundwasserüberdeckung. — Geol. Jb., C 63: 5–24, Hannover.