1- Abravan, P., and Sadeghzadeh Hemayati, S. 2003. Investigation of climate factors effects on spring rapeseed yield at rainfed conditions in Kalaleh region. The 1st congress of Rapeseed Research and Development in Gorgan, Iran. Pp: 79. (In Persian)
2- Bell, M.A., and Fischer, R.A. 1994. Using yield prediction models to assess yield gains-a case study for wheat. Field Crops Research 36: 161-166.
3- Bell, M.A., Fischer, R.A., Byerlee, D., and Sayre, K. 1995. Genetic and agronomic contributions to yield gains: a case stydy for wheat. Field Crops Research 44: 55-65.
4- Blackmore, B.S., and Godwin, R. 2003. The analysis of spatial and temporal trends in yield map data over six years. Biosystems Engineering 84: 455-466.
5- Food and Agriculture Organization. 2004. Internet database: http://www.fao.org.
6- Feyzabadi, A., Koocheki, A., and Nassiri Mahalati, M. 2005. Trend analysis of yield, production and cultivated area of cereal in Iran during the last 50 years and prediction of future situation. Iranian Field Crops Research. 4: 49-69. (In Persian with English Summary)
7- Hall, C.A.S., Perez, C.L., and Leclerc, G. 2000. Quantifying Sustainable Development: The Future of Tropical Economies. Academic Press, San Diego.
8- Hafner, S. 2003. Trends in maize, rice, and wheat yields for 188 nations over the past 40 years: a prevalence of linear growth. Agriculture, Ecosystems and Environment 97: 275–283.
9- Hanke, J.E., and Reitsch, A.G. 1995. Business Forecasting. Prentice Hall, Englewood Cliffs, NJ.
10- Khush, G.S. 1999. Green revolution: preparing for the 21st century. Genome 42: 646-655.
11- Koocheki, A., Nassiri, M., Kamali, G.A., and Shahandeh, H. 2006. Potential impacts of climate change on agro-meteorological indicators in Iran. Arid Land Research and Management 20 (3): 245-259. (In Persian with English Summary)
12- Mazaheri, D. 2001. Food Security Project. Science Cultural, Islamic Republic of Iran. (In Persian)
13- Nassiri Mahallati, M. 2008. Modelling. Pp 420-445. In: Koocheki, A., and Khajehhoseini, M. 2008. Modern Agronomy. Jehad-University of Mashhad Press. 704pp. (In Persian)
14- Patchet, S.I. 1982. Statistical Methods for Managers and Administrators. Van Nostrand Reinhold Company, New York, NY.
15- Peng, S., Laza, R.C., Visperas, R.M., Sanico, A.L., and Cassman, K.G. 1999. Grain yield of rice cultivars and lines developed systems: Yield potential, Soil quality and Precision agriculture. Proceeding National Academic Science 96: 5952-5959.
16- Rao, M.S., and Mendham, N.J. 1991. Comparison of chinoli (Brassica campestris) and B. napus oilseed rape using different growth regulators plant population treatments. Journal of Agricultural Science Cambridge 117: 177 – 187.
17- Reynolds, M.P., Rajaram, S., and Sayre, L.D. 1999. Physiological and genetic changes of irrigated wheat in the post green revolution period and approaches for meeting projected global demand. Crop Science 39: 1611-16-21.
18- Rosegrant, M., Paisner, M., Meijer, S., and Witcover, J. 2001. Global Food Projections to 2020: Emerging Trends and Alternative Futures. International Food Policy Research Institute, Washington, D.C.
19- Slafer, G.A., Satorre, E.H., and Andrade, F.H. 1994. Increases in grain yield in bread wheat from breeding and associated physiological changes. In: Slafer, G.A., Ed., Genetic improvement of Field Crops. Marcel Dekker, New York, pp: 1-68.