Britz, W. (2004). CAPRI modeling system documentation. Common Agricultural Policy Regional Impact Analysis. Bonn.
Enders, W. (2004). Applied econometric time series. New York. Wiley
FAO. (1993). The World food model -model specifications ESC/M/93/1. Rome, Italy.
Food and Agricultural Policy Research Institute (FAPRI). (2011). World agricultural outlook database. From http:// www . fapri . iastate . edu / tools / outlook . aspx
Freebairn, J.W. (1975). Forecasting for australian agriculture. Australian Journal of Agricultural Economics, 19(3)
Heckelei, T. (1997). Positive mathematical programming: review of the standard approach, CAPRI-Working Paper 97-03, University of Bonn.
Helming, J.F.M. (2005). A model of Dutch agriculture based on Positive Mathematical Programming with regional and environmental applications. PhD thesis, Wageningen University.
Howitt, R.E. (1995). Positive mathematical programming. American Journal of Agricultural Economics, 77(2)
Koc, A.A, Darnell B. S, Frank F, and Fabiosa, J. (1998). The Turkish agricultural policy analysis model. Technical Report 98-TR 42, Center for agricultural and rural development, Iowa State University.
Jikun, H, Rozelle, S & Rosegrant, M.W. (1997). China’s food economy to the 21st century: Supply, demand, and trade. 2020 Vision Discussion Paper No. 19. Washington, D.C.: International Food Policy Research Institute.
OECD. (2011). OECD-FAO Agricultural Outlook. From http://stats.oecd.org/
Lampe, M. (1998). The world agricultural trade simulation system (WATSIM). Discussion Paper 98-05, Institute for Agricultural Policy, University of Bonn.
Ministry of Jahad-e-Keshavarzi. (2008). Production cost of agricultural crops, statistical database. (In Farsi)
Mohanty, S. Alexandratos, N & Bruinsma, J. (1998). The long term food outlook for India. Technical report 98. Center for agricultural and rural development, Iowa State University.
Paris, Q., & Howitt, R.E. (1998). An analysis of Ill-posed production problems using maximum entropy. American Journal of Agricultural Economics. 80(1)
Paris, Q., & Arfini, F. (2000). Frontier cost functions, self-selection, price risk, PMP and agenda 2000. Euro tools Working Papers Series, No. 20.
Rosegrant, M.W, Agcaoili-Sombilla, M & Perez, N. (1995). Global Food Projections to 2020. Discussion Paper No. 5., IFPRI, Washington DC.
Statistical Center of Iran. (2008). Statistical yearbook, Households' expenditure and revenues, Statistical Center of Iran. (In Farsi)
Statistical Center of Iran. (2008). Statistical yearbook, Sell price of agricultural products agricultural in rural regions of country, Statistical Center of Iran. (In Farsi)
USDA. (1996): Long Term Projections for International Agriculture to 2005. ERS Staff Paper No. 9612, August. Washington, DC.
Wiborg, T. (1998). KRAM - A sector model of danish agriculture, background and framework development. Working paper 98-WP 193. CARD, Iowa State University, Ames, Iowa.
)