M. I., G., E.-K. M. M., and I. H. M. G. “Groundwater Vulnerability Assessment Using Different Overlay and Index Methods for Quaternary Aquifer of Wadi El-Tumilat, East Delta, Egypt”. Asian Review of Environmental and Earth Sciences, vol. 2, no. 1, Apr. 2015, pp. 9-22, http://www.asianonlinejournals.com/index.php/AREES/article/view/684.