1. Wetland and hydrology;Acreman,2000
2. Water Resources in the Arid Realm;Agnew,1992
3. FAO, 1999, Aquastat information system. The Land and Water Development Division, http://www.FAO.org/waicent/faoinfo/agricult/aglw/aquastat
4. Water Resources of the Near East Region: A Review,1997
5. Water Resources in the Arab Middle East and North Africa;Gischler,1979