1. Akhtar, N. (2003). The use of irrigation systems for sustainable fish production in Pakistan. In T. Petr (Ed.), Fisheries in irrigation systems of arid Asia (pp. 17–39). FAO Fisheries Technical Paper. No. 430. Rome: Food and Agriculture Organization.
2. Al-Saadi, H. A., Al-Lami, A. A., Hassan, F. A., & Al-Dulymi, A. A. (2002). Heavy metals in water, suspended particles, sediments and aquatic plants of Habbaniya Lake, Iraq. International Journal of Environmental Studies, 59, 589–598.
3. Atanassova, D., Stefanova, V., & Russeva, E. (1998). Co-precipitative pre-concentration with sodium diethyldithiocarbamate and ICP-AES determination of Se, Cu, Pb, Zn, Fe, Co, Ni, Mn, Cr and Cd in water. Talanta, 47, 1237–1243.
4. Barbier, O., Jacquillet, G., Tauc, M., Cougnon, M., & Poujeol, P. (2005). Effect of heavy metals on, and handling by, the kidney. Nephron Physiology, 99, 105–110.
5. BirdLife International Cambridge (2005). BirdLife’s online world bird database: The site for bird conservation. Version 2.0. Cambridge, UK: BirdLife International. Available: http://www.birdlife.org . Accessed on 25 August 2006.