Allan, J.A. (1997). “Virtual water”: a long-term solution for water short Middle Eastern economies. Paper presented at the 1997 British Association Festival of Science, University of Leeds, UK.
Benli, B., & Kodal, S. (2003). A nonlinear model for farm optimization with adequate and limited water supplies: Application to the South- east Anatolia project (GAP) region. Agriculture and Water Management. 62: 187-203.
Delgado, C., Mark, R., Henning, S., Simeon, E., & Claude, C. (2003). Livestock to 2020: the next food revolution, Food, Agriculture and Environment Discussion Paper 28. International Food Policy Research Institute.
Iranian Ministry of Agriculture, (2003). Comparative advantage of selected agricultural products. Planning and Economic Dep. Research Institute of Planning and Agricultural Economics.
Turton, A.R. (2000). Precipitation, people, pipelines and power: Towards“virtual water” based political ecology discourse. MEWREW Occasional paper, water issues study group, School of Oriental and African Studies (SOAS) University of London.
Wichelns, D. (2001). The role of “virtual water” in efforts to achieve food security and other national goals, with an example from Egypt. Agricultural Water Management, 49: 131-151.
)