1. Ahearn, M., Yee, J., & Huffman, W. (2002, July). R&D, productivity, and structural change in US agriculture, 1960-1996. In Presentation at the National Bureau of Economic Research Summer Institute Conference on Research in Income and Wealth Cambridge, Massachusetts July, 29-31.
2. Alston, J.M. (2010), "The Benefits from Agricultural Research and Development, Innovation, and Productivity Growth", OECD Food, Agriculture and Fisheries Papers, No. 31, OECD Publishing, Paris. http://dx.doi.org/10.1787/5km91nfsnkwg-en [
DOI:10.1787/5km91nfsnkwg-en]
3. Amer, P. R., Nieuwhof, G. J., Pollott, G. E., Roughsedge, T., Conington, J. and Simm, G. (2007). Industry benefits from recent genetic progress in sheep and beef populations. Animal, 1(10), 1414-1426. [
DOI:10.1017/S175173110700078X]
4. Anonymous. (2022). Report on developments in the real sector of Iran's economy in (2019). Ardabil Province Research and Education Center. (Light livestock research projects report.
5. Asadi, H. and Saidi, A. (2013). Estimating investment returns in research of modified varieties of blue wheat in Iran, Journal of Research and Development, 64, 21-32.
6. Bagherzadeh, A. & Kamijani, A.(2018). Measurement and analysis of investment return rate in Iran's agricultural research. Agricultural Economics Quarterly, 5(2), 178-201.
7. Bi Hamta, M. R. and Zare Chahoki, M. A. (2017). Principles of statistics in natural resource sciences. University of Tehran Publishing and Printing Institute. 300 p.
8. Blandford, D., Josling, T. and Bureau, J. C. (2011). Keeping an Eye on the Ball: The need to prioritize US and EU research and development fFunding for agriculture. International food and agricultural trade policy council. 165p
9. Chudleigh, P. (2008). Economic evaluation of MLA northern beef RD&E investment for 2000/2001 to 2007/08. Final report of Project. Code: B. COM. 1001. Meat & Livestock Australia Limited. Locked Bag 991. 33p
10. Falahpour, A. et al. (2021). Effect of flushing diet containing phytoestrogens of soy products on off-season reproductive performance of Afshari ewes. Livestock production research journal, 12(34), 100-108. [
DOI:10.52547/rap.12.34.100]
11. Fuglie, K. O. & Heisey, P. W. (2007). Economic returns to public agricultural research: Economic brief No. 10, Economic research service, U.S. Department of agriculture, Washington, DC. 9p.
12. Ghanbari, A. et al. (2021). The effect of substituting slow-release non-protein nitrogen source with urea in diets containing almond shells on sheep's microbial protein production and nitrogen balance. Livestock production research journal. 12(34), 89-98. [
DOI:10.52547/rap.12.34.89]
13. Griffith, G., Alford, A., Davies, L., Robert, H., Parnell, P., & Roger, H. (2004). An assessment of the economic, environmental, and social impacts of NSW agriculture's investment in the net feed efficiency R D & E cluster. NSW department of primary industries, Armidale. Economic Research Report, 18. 48.
14. Hassanpour. B., Nemati, A. and Zare, A. (2016). Investigating return on investment in the research of improved rainfed varieties in the country, Agricultural Economics and Development, 15, 55-46.
15. Office of Economic Studies of Agricultural Research Plans. (2015). estimation of return on investment in grain research (Quds wheat). Technical report. No. 404/75, Agricultural Education and Promotion Research Organization, Tehran, 26 p.
16. Mousnejad, M. Q. (2013). The role of research in agricultural development. Central Bureau of Agricultural Economics Research. Agricultural research, education, and promotion organization. Tehran, 80 p.
17. Nkonya, E. M. and Parcell, J. L. (1999). Redistribution of social benefits from advances in extension and research in the Tanzanian maize industry. Agricultural Economics, 21, 231-239. [
DOI:10.1111/j.1574-0862.1999.tb00597.x]
18. Nikoi, A., Bagheri, A., Ghandi, A. and Zare, A. (2016). Investigating the efficiency of investment in agricultural research, a case study of Mahdavi variety wheat research in Isfahan province. Journal of Agricultural Sciences, 12(2), 261-251.
19. Rafati, M. and Najafi, b. (2005). Determining the yield rate of wheat seed improvement research in Fars province, Quarterly Journal of Agricultural Economics and Development, 15, 34-9.
20. Sharifi, S., R., and colleagues. (2022). Genomic prediction of additive and dominance effects on some economic traits of Mughani sheep. Livestock production research journal, 13(38), 187-193 [
DOI:10.52547/rap.13.38.187]
21. Schiffer, R., Mendenhall, W. and Att, L. (2015). An introduction to sample surveys. Translated by Amauri, Sanjari and Boghornia. Ferdowsi University of Mashhad, 435 p.
22. Spielman, D. T. (2008). Public-private partnership and pro-poor livestock research: The search for an east coast fever vaccine. Enhancing the effectiveness of sustainability partnership: summary of the workshop. June. 18-19. Washington, DC. The USA, 314 p.
23. Traxler, G. and Byerlee, D. (1992). The economic returns to crop management research in post-green revolution setting. American Journal of Agricultural Economics, 74, 573-582. [
DOI:10.2307/1242570]
24. Taylor, D. B., Moon, R. D., & Mark, D. R. (2012). Economic impact of stable flies (Diptera: Muscidae) on dairy and beef cattle production. Journal of Medical Entomology, 49(1), 198-209. [
DOI:10.1603/ME10050]
25. Zare, A., Nikoi, A., Seidman, S.M., Mansourian, N., Mirzaei, M., Shahnavazi, A. and Bayat, P. (2011). Investigating the adoption of innovation and investment returns in the research of blue wheat cultivars named Marvdasht, Alvand, Flat, Chamran, and Mahdavi. Final report of the research project, Fars Agricultural, and Natural Resources Research Center, Shiraz, 232p.
26. Zare, A. & Shahrukhnia, M. A. (2013). Using the hierarchical analysis method in choosing the best irrigation planning method in citrus orchards in Fars province. Proceedings of the 3rd National Conference on Comprehensive Water Resources Management. Sari University of Agriculture and Natural Resources. 20-21 Shahrivar, Sarif, Iran.