1. Ahmed, K., Shahid, S., bin Harun, S., Ismail, T., Nawaz, N., & Shamsudin, S. (2014). Assessment of groundwater potential zones in an arid region based on catastrophe theory. Earth Sciences Information. doi: 10.1007/s12145-014-0173-3 .
2. Al-Abadi, A. M. (2015). Modeling of groundwater productivity in northeastern Wasit Governorate, Iraq by using frequency ratio and Shannon’s entropy models. Applied Water Science. doi: 10.1007/s13201-015-0283-1 .
3. Al-Sayab, A., Al-Ansari, N., Al-Rawi, D., Al-Jassim, J., Al-Omari, F., & Al-Shaikh, Z. (1982). Geology of Iraq. Iraq: Mosul University (In Arabic).
4. Al-Shammary, SH. (2006). Hydrogeology of Galal Basin-Wasit east, Iraq. Unpublished Ph D thesis, Baghdad.
5. Aniya, M. (1985). Landslide-susceptibility mapping in the Amahata river basin, Japan. Annual Association American Geographers, 75, 102–114.