Falkenmark, M., Fox, P., Persson, G. and Rockstrom, J. (2001) Water harvesting for upgrading of rain-fed agricul ture: Problems analysis and research needs. Stockholm International Water Institute, Stockholm.
 Oweis, T. and Hachum, A. (2009). Optimizing supplemen tal irrigation: Tradeoffs between profitability and sustai nability. Agricultural Water Management, 96, 511-516.
 Oweis, T. and Hachum, A. (2006) Water harvesting and supplemental irrigation for improved water productivity of dry farming systems in West Asia and North Africa. Agricultural Water Management, 80, 57-73.
 Finkel, H.J. and Finkel, M. (1986) Engineering measures: Water Harvesting. In: Finkel, H.J., Finkel, M. and Naveh, Z., Eds., Semi-Arid Soil and Water Conservation, CRC Press, Inc., Boca Raton, 93-101.
 Siegert, K. (1994) Introduction to water harvesting: Some basic principles for planning, design and monitoring. Water Harvesting for Improved Agricultural Production, Proceedings of the FAO Expert Consultation, Cairo, Rome, FAO.
 Rogelio, N.C., Samuel, M.C., Wilfredo, B.S., Arnulfo, B.G., Gina, P.N., Karen, A.S., Katherine, M.M. and Sharon, V. de Vera (2006) Enhancing multi-functionality of agricul ture through rainwater harvesting system. Paddy Water Environ, 4, 235-243. http://dx.doi.org/10.1007/s10333-006-0057-3
 Zakaria, S., Al-Ansari, N.A., Knutsson, S. and Ezz-Al deen, M. (2012) Rain water harvesting and supplemental irrigation at Northern Sinjar Mountain, Iraq. Journal of Purity, Utility Reaction and Environment, 1, 121-141.
 Oweis, T. and Hachum, A. (2003) Improving water pro ductivity in the dry areas of West Asia and North Africa. In: Kijne, W.J., Barker, R. and Molden, D., Eds., Water Productivity in Agriculture: Limits and Opportunities for Improvement, CABI Publishing, Wallingford, 179-197.
 Adary, A., Hachum, A., Oweis, T. and Pala, M. (2002) Wheat productivity under supplemental irrigation in Nor thern Iraq. On-Farm water husbandry research report se ries, No. 2. International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo.
 Shideed, K.H. (2012) Informing policy development for sustainable and productive food production systems in dry areas. International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo.
 Zhang, H. and Oweis, T. (1999) Water-yield relations and optimal irrigation scheduling of wheat in the Mediterra nean region. Agricultural Water Management, 38, 195 211.
 Al Khalidy, K.A. (2004) Preparation of geographical in formation system for the South Jazira irrigation project with the aid of remote sensing data. Unpublished M.Sc. Thesis, Mosul University, Mosul.
 Al-Ansari, N.A., Ezz-Aldeen, M., Knutsson, S. and Za karia, S. (2013) Water harvesting and reservoir optimiza tion of selected areas South Sinjar Mountain, Iraq. Engi neering Hydrology, in press.
 Musick, J.T., Jones, O.R., Stewart, B.A. and Dusek, D.A. (1994) Water-yield relationships for irrigated and dryland wheat in the US Southern Plains. Agron, 86, 980-986.