Aghaee, M. and Asadi, H. (2010). The role of improved varieties in increasing of crop yield in Iran. Key Articles of 11th Iranian Crop Science Congress of 24-26 July. Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, pp. 1-34. (Persian)
Arumugan, S., Kulshreshtha, S.N., Vellangani, I. and Govinddasamy, R. (2015). Yield variability in rainfed crops as influenced by climate variables: a micro level investigation into agro-climatic zones of Tamil Nado, India. International Journal of Climate Change, Strategy, Management, 7: 442-459.
Beever, E.A. and Belant, J.L. (1993). Ecological consequences of climate change mechanisms, conservation and management. CRC Press, p. 266.
Byerlee, D. and Moya, P. (1993). Impacts of international wheat breeding research in the developing world, 1966-1990, Mexico. D.F. CIMMYT.
Challinor, A.J., Watson, J., Lobell, D.B., Howden, S.M., Smith, D.R. and Chhetri, N. (2014). A meta-analysis of crop yield under climate change and adaptation. Natural Climate Change, 4: 287-291.
Esfandiaripour, A., Tavazo, M., Ahmadifar, M. and Khanchi, M.V. (2016). Multiplication and preparation of wheat program. Ministry of Jihad-e-Agriculture. (Persian)
Feder, G., Just, R.E. and Ziberman, D. (1985). Adoption of agricultural innovations in developing countries: a survey. Economic, Development and Cultural Change, 33: 255-298.
Gujarati, D. (2011). The introduction of econometrics. Abrishami (Editor). Tehran University Publication, Tehran. (Persian)
Harris, R.D.F. and Tzavalis, E. (1999). Inference for unit roots in dynamic panels where the time dimension is fixed. Journal of Econometrics, 91: 201-226.
Howkins, E., Fricker, T.E., Challinor, A.J., Ferro, C.A.T. and Osborn, T.M. (2013). Increasing influence of heat stress on French maize yield from the 1960s to the 2030s. Global Change Biological, 19: 937-947.
Just, R. and Pope, R. (1979). Production function estimation and related risk considerations. American Journal of Agricultural Economics, 61: 276-284.
Liu, B. et al. (2016). Similar estimates of temperature impacts on global wheat yield by three independent methods. Natural. Climate Change, 4: 1-8.
Michalski, J.T. (2012). Wheat varieties technology, climate and yield: an analysis using WSU wheat variety test data and interpolated weather records. PhD Dissertation, Washington State University, Washington.
Nalley, L.L. (2007). The genetic and economic impact of the CIMMYT wheat breeding program: a policy analysis of public wheat breeding. PhD Dissertation, Kansas State University, Kansas.
Nalley, L., Moldenhauer, K.A. and Lyman, N. (2011). The genetic and economic impact of the university of Arkansas rice breeding program: 1983-2007. Journal of Agricultural and Applied Economics, 43( 1): 131-142.
Norton, G.W. and Davis, J.S. (1981). Evaluating returns to agricultural research: a review. American Journal of Agricultural Economics, 63(4): 685-699.
Poudel, S. and Kotani, K. (2013). Climatic impacts on crop yield and its variability in Nepal: do they vary across season and altitudes? Climate Change,116: 327-355.
Saeidi, A.; Akbari, A., Heydari, A. and Bakhtiar, F. (2011). Achievements of cereal research department in 1992-2002. Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization, Ministry of Jihad-e-Agriculture. (Persian)
Traxler, G., Falck-Zepeda, J., Ortiz. M. and Sayere, K. (1995). Production risk and the evolution of varieties technology. American Journal of Agricultural Economics, 77: 1-7.
Zarakani, F.; Kamali, G.A. and Chizari, A.H. (2011). The effect of climate change on the economy of dry wheat: case study of North Khorasan. Journal of Agro-ecology, 6(2): 301-310. (Persian)